APA (7th ed.) Citation

Gulligan, K. G., Meadow, M. J., & Ghowning, D. (1994). Purifying the heart: Buddhist insight meditation for Christians. Crossroad.

Chicago Style (17th ed.) Citation

Gulligan, Kevin G., Mary Jo Meadow, and Daniel Ghowning. Purifying the Heart: Buddhist Insight Meditation for Christians. New York: Crossroad, 1994.

MLA (8th ed.) Citation

Gulligan, Kevin G., et al. Purifying the Heart: Buddhist Insight Meditation for Christians. Crossroad, 1994.