APA (7e ed.) Bronvermelding

Gienger, M., & Mick, A. (1998). Crystal power, crystal healing: The complete handbook. Cassell.

Chicago (17e ed.) Bronvermelding

Gienger, Michael, en Astrid Mick. Crystal Power, Crystal Healing: The Complete Handbook. London: Cassell, 1998.

MLA (9e ed.) Bronvermelding

Gienger, Michael, en Astrid Mick. Crystal Power, Crystal Healing: The Complete Handbook. Cassell, 1998.