Gaya APA
Gulen, M, F.
(2000).
Essentials of the Islamic faith / M. Fethullah Gulen
.
:
The Fountain.
Gaya MLA
Gulen, M., Fethullah.
"Essentials of the Islamic faith / M. Fethullah Gulen".
:
The Fountain,
2000.
Referensi.