Robertson, I. (1983). What cults believe (4th ed.). Moody Press.
Cita Chicago Style (17a ed.)Robertson, Irvine. What Cults Believe. 4th ed. Chicago: Moody Press, 1983.
Cita MLA (9a ed.)Robertson, Irvine. What Cults Believe. 4th ed. Moody Press, 1983.
Precaución: Estas citas no son 100% exactas.