Cita APA (7th ed.)

WATT, W. M. (1968). What is Islam. Longmans.

Cita Chicago (17th ed.)

WATT, W. Montgomery. What Is Islam. London: Longmans, 1968.

Cita MLA (9th ed.)

WATT, W. Montgomery. What Is Islam. Longmans, 1968.