APA (7th ed.) Zitazioa
Unger, M. F. (1971). Demons in the world today. Tyndale House Publishers.
Chicago Style (17th ed.) Zitazioa
Unger, Merril F. Demons in the World Today. Illinois: Tyndale House Publishers, 1971.
MLA (9th ed.) Zitazioa
Unger, Merril F. Demons in the World Today. Tyndale House Publishers, 1971.
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