APA (7th ed.) Zitazioa
Nehls, G. (1989). Islam: Believed, evaluated, presented. Life Challenge (Africa).
Chicago Style (17th ed.) Zitazioa
Nehls, Gerhard. Islam: Believed, Evaluated, Presented. Bellville: Life Challenge (Africa), 1989.
MLA (9th ed.) Zitazioa
Nehls, Gerhard. Islam: Believed, Evaluated, Presented. Life Challenge (Africa), 1989.
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