- ed. The Book of the Goddess Past and Present: An Introduction to Her Religion. (New York: Crossroads Publishing Company, 1983; republished by Waveland Press, Inc., 2002.)

- The Mysterious Play of Kali: An Interpretive Study of Ramakrishna. (Atlanta: Scholars PRess, 1990.)

- The Theology and Philosophy of Eliade: A Search for the Centre. (London: Macmillan Publishing Company, 1992.)

- The Indian Renouncer and Postmodern Poison: A Cross-Cultural Encounter. (New York: Peter Lang Publishing, 1997.)

- Zen and the Art of Postmodern Philosophy: Two Paths of Liberation from the Representational Mode of Thinking. (Albany, NY: SUNY Press, 2000).

- Indian Philosophers and Postmodern Thinkers: Dialogues on the Margins of Culture. (Delhi: Oxford University Press, 2002).

- ed. Theory and Method in the Study of Religion. (Belmont, CA: Wadsworth Publishing, 2003).

- The Differnet Paths of Buddhism: A Narrative-Historical Introduction. (Piscataway, NJ: Rutgers University Press, 2005). 2006 Outstanding Academic Title, Choice.

- ed. Original Buddhist Sources: A Reader. (Piscataway, NJ: Rutgers University Press, 2005).

- The Many Colors of Hinduism: A Thematic-Historical Introduction. (Piscataway, NJ: Rutgers University Press, 2007).

- ed. Hindu Primary Sources: A Sectarian Reader. (Piscataway, NJ: Rutgers University Press, 2007).

- ed. Celibacy and Religious Traditions. (Oxford, New York: Oxford University Press, forthcoming 2007).

- Historical Dictionary of Buddhism, New Edition. (Lanham, MD: Scarecrow Press, Inc., forthcoming 2008, contract signed).