Robertson, I. (1983). What cults believe (4th ed.). Moody Press.
Lua i Stíl Chicago (17ú heag.)Robertson, Irvine. What Cults Believe. 4th ed. Chicago: Moody Press, 1983.
Lua MLA (9ú heag.)Robertson, Irvine. What Cults Believe. 4th ed. Moody Press, 1983.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.