Cita APA (7a ed.)

Guillaume, A. (1966). Islam (2nd ed. rev., repr.). Penguin.

Cita Chicago Style (17a ed.)

Guillaume, Alfred. Islam. 2nd ed. rev., repr. Baltimore: Penguin, 1966.

Cita MLA (9a ed.)

Guillaume, Alfred. Islam. 2nd ed. rev., repr. Penguin, 1966.