Robertson, I. (1983). What cults believe (4th ed.). Moody Press.
Tohutoru Kātū Chicago (17th ed.)Robertson, Irvine. What Cults Believe. 4th ed. Chicago: Moody Press, 1983.
Tohutoro MLA (9th ed.)Robertson, Irvine. What Cults Believe. 4th ed. Moody Press, 1983.
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