Gulen, F., & Cetin,Muhammed. (2008). Questions & answers about Islam. Tughra, Inc.
Cita Chicago (17th ed.)Gulen, Fethullah, i Cetin,Muhammed. Questions & Answers About Islam. New Jersey: Tughra, Inc, 2008.
Cita MLA (9th ed.)Gulen, Fethullah, i Cetin,Muhammed. Questions & Answers About Islam. Tughra, Inc, 2008.
Atenció: Aquestes cites poden no estar 100% correctes.