Cita APA (7a ed.)

Duncan, D. D. (1982). The world of Allah. Houghton Mifflin Company.

Cita Chicago Style (17a ed.)

Duncan, David Douglas. The World of Allah. Boston: Houghton Mifflin Company, 1982.

Cita MLA (9a ed.)

Duncan, David Douglas. The World of Allah. Houghton Mifflin Company, 1982.