APA-referens (7:e uppl.)

Gulen, F. (2009). Essentials of the Islamic faith. Tughra.

Chicago-referens (17:e uppl.)

Gulen, Fethullah. Essentials of the Islamic Faith. New Jersey: Tughra, 2009.

MLA-referens (9:e uppl.)

Gulen, Fethullah. Essentials of the Islamic Faith. Tughra, 2009.