Cita APA (7a ed.)

Özkardes, M. A. (1978). The essence of the Qur'an. [s.n.].

Cita Chicago Style (17a ed.)

Özkardes, Mehmet Ali. The Essence of the Qur'an. Istambul: [s.n.], 1978.

Cita MLA (9a ed.)

Özkardes, Mehmet Ali. The Essence of the Qur'an. [s.n.], 1978.