Gaya APA

\'Umar, I, A. (1990). al-'Ilm wa al-Iman : Madkhal ila Nazariyat al-Ma'rifah fi al-Islam . Amerika: al-ma`had al-`alimi li al-fikr li al-islam.

Gaya MLA

\'Umar, Ibrahim, Ahmad. "al-'Ilm wa al-Iman : Madkhal ila Nazariyat al-Ma'rifah fi al-Islam". Amerika: al-ma`had al-`alimi li al-fikr li al-islam, 1990. Buku.