The Varieties of Religious Experience - William James
The Interpretation of Cultures - Clifford Geertz
Psychology of Religion - D.M. Wulff
Handbook of Religious Experience - R.W Hood Jr.
Varieties of Anomalous Experience: Examining the Scientific Evidence - Etzel Cardena, Steven Jay Lynn, Stanley C. Krippner (eds.)

The Mystical Mind - Eugene d'Aquili and Andrew B. Newberg

Neurotheology and Evolutionary Theology: Reflections on the Mystical Mind. Karl E. Peters. Journal for the Scientific Study of Religion. Volume 36, Issue 3, Page 493-500, Sep 2001.

Religious and Mystical States: A Neuropsychological model.
Eugene G. d'Aquili, Andrew B. Newberg. Journal for the Scientific Study of Religion. Volume 28, Issue 2, Page 177-200, Jun 1993

Hutch, R. A. (1995). “Before I’d be a slave, I’d be buried in my grave, and go home to my lord and be free”. International Journal for the Psychology of Religion, 5(3), 171-176.

Thoughts on the Ineffability of the Mystical Experience
William G. Braud. International Journal for the Psychology of Religion, Vol. 12, No. 3: pages 141-160. 2002

The Structure of Religious Mystical Experience in Relation to Pre- and Postexperience Lifestyles. Bernard Spilka, George A. Brown, Stephen A. Cassidy. International Journal for the Psychology of Religion, Vol. 2, No. 4: pages 241-257. 1992

Emotions: Here and Now, Then and There. James R. Averill.
International Journal for the Psychology of Religion, Vol. 6, No. 2: pages 89-94. 1996

Pascal Boyer- Religion Explained

In god we trust- Scott Atran