Cita APA (7th ed.)
Schuon, F. (1972). Understanding Islam. Penguin Books.
Cita Chicago (17th ed.)
Schuon, Frithjof. Understanding Islam. Baltimore: Penguin Books, 1972.
Cita MLA (9th ed.)
Schuon, Frithjof. Understanding Islam. Penguin Books, 1972.
Atenció: Aquestes cites poden no estar 100% correctes.