Cita APA (7th ed.)

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

Cita Chicago (17th ed.)

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

Cita MLA (9th ed.)

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