Anonymous, "Basilides," The Oxford Dictionary of the Christian Church; edited by F.L. Cross. London: Oxford University Press, 1957.
Attridge, Harold, W., Editor. Nag Hammadi Codex I (The Jung Codex). Netherlands: E.J. Brill, 1985.
Chadwick, Henry, B.D. and John Ernest Leonard, D.D., Translators. "Stromata" in The Library of Christian Classics Vol. II Alexandrian Christianity. Philadelphia: The Westminster Press.
Cruttwell, Charles T. A Literary History of Early Christianity. New York: AMS Press, 1971.
Davidson, James E. "Structural Similarities and Dissimilarities in the Thought of Clement of Alexandria and the Valentinians," in The Second Century: A Journal of Early Christian Studies, Vol. III, No. IV. Georgia: Mercer University Press, 1983.
Forester, Werner, Editor. Gnosis: A Selection of Gnostic Texts. Great Britain: Clarendon Press,
Fossum, Jarl Egil. The Name of God and the Angel of the Lord: The Origins of the Ideas of Intermediation in Gnosticism. Netherlands: Utrecht, 1982.
Gilhus, Ingvild. The Nature of the Archons: A Study in the Soteriology of a Gnostics Treatise from Nag Hammadi (CG II, 4). Germany: Otto Harassowitz, 1985.
Grant, Robert M. "Gnostic Origins and the Basilidians of Irenaeus," in VigChr 13, 1959, 121-25.
Grant, Robert M. Gnosticism and Early Christianity. New York: Columbia University Press, 1966.
Grant, Robert M., Editor. Gnosticism: A Source Book of Heretical Writings from the Early Christian Period. New York: Harper & Brothers, 1961.
Jackson, A.V. Researches in Manichaeism. New York: AMS Press, 1965.
Jonas, Hans. The Gnostic Religion: The Message of the Alien God and the Beginnings of Christianity. 2nd edition. Boston: Beacon, 1963.
King, Charles W. Gnostics and Their Remains. Minneapolis: Wizards Bookshelf, 1973.
Krause, Martin, Editor. Gnosis and Gnosticism: Papers Read at the Eighth International Conference on Patristic Studies (Oxford, Sept. 8th-13th, 1975). Netherlands: E. J. Brill, 1977.
Layton, Bentley. The Gnostic Scriptures. New York: Doubleday & Company, Inc., 1987.
Mansel, Henry L. The Gnostics Heresies of the First and Second Century. London: J. Murray, 1875.
Pagels, Elaine. The Gnostic Gospels. New York: Random House, Inc., 1979.
Pearson, Birger. Gnosticism, Judaism, and Egyptian Christianity. Minneapolis: Fortress Press, 1990.
Quispel, Gilles. Gnostic Studies. Netherlands: Netherlands Historisch-Archaeologiisch Instituut, 1974.
Roberts, Rev. Alexander and James Donaldson, Editors. The Ante-Nicene Fathers: Translations of the Writings of the Fathers down to A.D. 325. Michigan: WM B. Eerdmans Publishing Company, 1975.
Robinson, James M., Editor. The Nag Hammadi Library in English. New York: Harper & Row, Publishers, 3rd edition, 1988.
Rudolph, Kurt. Gnosis: The Nature and History of Gnosticism. San Francisco: Harper & Row, Publishers, 1987.
Schmidt, Carl. Editor/translator. Pistis Sophia. Leiden: Brill, 1978.
Scholer, David M. Nag Hammadi Bibliography. Netherlands: E.J. Brill, 197 1.
Strouma, Geduliahu A.G. Another Seed: Studies in Gnostic Mythology. Netherlands: E.J. Brill, 1984.
Vallee, Gerald. A Study in Anti-Gnostic Polemics. Canada: Canadian Corporation for Studies in Religion.
Walker, Benjamin. Gnosticism: Its History and Influence. Northamptonshire: The Aquarian Press, 1983.
Widengren, Geo. The Gnostic Attitude (translated and edited by Birger A. Pearson). Santa Barbara: Institute of Religious Studies, UCSB, 1973.
Yamauchi, Edwin, M. Pre-Christian Gnosticism: A Survey of the Proposed Evidences. Michigan: W.B. B. Eerdmans Publishing Co., 1973.
(includes section on Sikhism)
Abbot, Justin E. Ramdas. (No. 8 of The Poet Saints of Maharashtra Series.) Poona City: Aryabhushan Press, 1932.
Allison, W.L. The Sadhs. (The Religious Life of India Series.) Calcutta: Y.M.C.A. Publishing House, 1935.
Bal, S.S. Guru Nanak in the Eyes of Non-Sikhs. Chandigarh: Punjab Univ., 1969.
Barrier, N. Gerald. The Sikhs and Their Literature: A Guide to Books, Tracts, and Periodicals, 1849-1919. Delhi: Manohar Book Service, 1970.
Barthwal, Pitambar Datt. Traditions of Indian Mysticism Based Upon Nirguna School of Hindi Poetry. New Delhi: Heritage Press, 1978. (Originally presented as the author's thesis, Benaras Hindu University.)
Behari, Bankey. Bhakta Mira. Chaupatty, Bombay: Bharatiya Vidya Bhavan, 1971.
Behari, Bankey. Sufis, Mystics and Yogis of India. Chaupatty, Bombay: Bharatiya Vidya Bhavan, 1962.
Belsare, K.V. Tukaram. New Delhi: Maharashtra Information Centre, 1967.
Bhandarkar, R.G. Vaisnavism, Saivism and Minor Religious Systems. Varanasi: Indological Book House, 1965.
Briggs, George Weston. Goraknath and the Kanphata Yogis. Calcutta: Y.M.C.A. Publishing House, 1938. (Via Oxford University Press: The Religious Life of India.)
Chattopadhyaya, Sudhakar. Evolution of Hindu Sects. New Delhi: Munshiran Manoharlal, 1970.
Dasgupta, Shashibhusan. Obscure Religious Cults. Calcutta: Firma K.L. Mukhopadhyay, 1962.
Eliot, Sir Charles. Hinduism and Buddhism: A Historical Sketch. Vol. 2. London: Edward Arnold &Company, 1921.
Fraser, J.N. The Poems of Tukaram. (Information on publication not available.)
Fraser, J.N. The Life and Teaching of Tukaram. (Information on publication not available.)
Ghurye, G.S. Indian Sadhus. With collaboration of L.N. Chapekar. Bombay: Popular Prakshan, 1964.
Greenless, Duncan. The Gospel of the Guru-Granth Sahib. Adyar, Madras: The Theosophical Publishing House, 1952.
Grewal, J.S. The Present State of Sikh Studies. Batala: Christian Institute of Sikh Studies, 1973.
Gupta, Hari R. History of the Sikh Gurus. New Delhi: Kapur, 1973.
Hastings, James, Editor. Encyclopedia of Religion and Ethics. New York: Charles Scribner's Sons, 1928.
Hedayetullah, Muhammad. Kabir: The Apostle of Hindu-Muslim Unity. Delhi: Motila Banarsidass, 1977.
Johar, Surinder Singh. The Sikh Gurus and their Shrines. Delhi: Vivek Publishing Company, 1976.
Juergensmeyer, Mark; N. Gerald Barrier, Editors. Sikhs Studies: Comparative Perspectives on a Changing Tradition. Berkeley: Graduate Theological Union, 1979.
Kabir. The Bijak of Kabir. Translated by Rev. Ahmad Shah. Hamir Pur, Himchal Pradesh: Pvt. published, 1917.
Macauliffe, Max A. The Sikh Religion: Its Gurus, Sacred Writings and Authors. Vol. 1-6 in three separate books. Oxford: Clarendon Press, 1909.
Machive, Prabhakar. Tukaramís Poems. Calcutta: United Writers, 1977.
Machwe, Prabhakar Balvant. Namdeva: Life & Philosophy. Patiala: Punjabi University, 1968.
Macnicol, Nicol. Psalms of the Marathi Saints. Oxford: Oxford University Press, 1919.
Madhan, V.G. Jnaneshvari. Vol. 1-2. London: George Allen Ltd., 1969.
McLeod, W.H. The Evolution of the Sikh Religion. Oxford: Clarendon Press, 1976.
McLeod, W.H. Guru Nanak and the Sikh Religion. Oxford: Clarendon Press, 1968.
McLeod, W.H. Early Sikh Tradition. Oxford: Clarendon Press, 1980.
McLeod, W.H. Who Is a Sikh? Oxford: Clarendon Press, 1989.
Orr, W.G. A Sixteenth Century Indian Mystic: Dadu and his followers. London: Lutterworth Press, 1947.
Raghavan, Dr. V. The Great Integrators: The Saint-Singers of India. New Delhi: Ministry of information and broadcasting, 1964.
Sardar, G.B. The Saint Poets of Maharashtra: Their Impact on Society. New Delhi: Orient Longmans Limited, 1969.
Sen, Kshitimohan. Medieval Mysticism of India. Translated from the Bengali by Manomohan Ghosh. New Delhi: Oriental Books Reprint Corporation, 1974.
Schomer, Karine, and McLeod, W.H. Editors. The Sants: Studies in a Devotional Tradtion of India. Berkeley and Delhi: Motilal Banarsidass, 1987.
Sharma, S.R. Tukaranes Teachings. Bombay: Bharatiya Vidya Bhavan, 1964.
Singh, Gopal, Translator. Guru Granth Sahib. Vol. 1-4. Delhi: Gur Das Kapur & Sons Private Ltd., 1964.
Singh, Gopal. Guru Gobind Singh. New Delhi: National Book Trust, 1966. (Second and revised edition.)
Singh, Harbans. The Heritage of the Golden Temple. Amritsar: Shiromani Gurdwara Parbandhak Committee, n.d.
Singh, Khushwant. The History of the Sikhs. Vol. 1-2. London: Oxford University Press, 1963-66.
Subramanian, Anna. Saints of India. Madras: Ramakrishna Math, 1977.
Tagore, Rabindranath, Translator (with assistance by Evelyn Underhill). One Hundred Poems of Kabir. London: Macmillan and Company, 1961.
Tiwari, Parasnath. Kabir. Translated by J.P. Uniyal. New Delhi: National Book Trust, 1968.
Topa, Ishwara Nath. The Social Philosophy of Kabir: A Study of His Thought World. Gorakhpur: Sahitya Sansar Prakashan, 1975.
Tripathi, B.D. Sadhus of India: The Sociological View. Bombay: Popular Prakshan, 1978.
Vaudeville, Charolette. Kabir. Oxford: Clarendon Press, 1974.
Webster, John C.B., Editor. Popular Religion in the Punjab Today. Delhi: The Christian Institute of Sikh Studies, Batala, 1974.
Wilkins, W.J. Modern Hinduism: An Account of the Religion and Life of the Hindus in Northern India. Delhi: B.R. Publishing Corporation, 1975. (Reprint.)
Williams, Sir Monier. Brahmanism and Hinduism: Or, Religious Thought and Life in India. London: John Murray, 1891.
Wilson, Horace H. Religious Sects of the Hindus. Edited by E.R. Rost. Calcutta: Susil Gupta, 1958. (First edition: 1861.)
Wylam, P.M. Guru Nanak. (Published for Guru Nanak Foundation.) New Delhi. Children's Book Trust New Delhi, 1969.
Yukteswar, Swami Sri. Kaibalaya Darshanam: The Holy Science. Los Angeles: Self Realization Fellowship, 1957.