APA (7th ed.) Citation

Robertson, I. (1979). What the cults believe (2nd ed., rev.). Moody.

Chicago Style (17th ed.) Citation

Robertson, Irvine. What the Cults Believe. 2nd ed., rev. Chicago: Moody, 1979.

MLA (9th ed.) Citation

Robertson, Irvine. What the Cults Believe. 2nd ed., rev. Moody, 1979.