Cita APA (7th ed.)
Yusuf, H. (2012). Purification of the Heart. Sandala.
Cita Chicago (17th ed.)
Yusuf, Hamza. Purification of the Heart. California: Sandala, 2012.
Cita MLA (9th ed.)
Yusuf, Hamza. Purification of the Heart. Sandala, 2012.
Atenció: Aquestes cites poden no estar 100% correctes.