Cita APA (7th ed.)

Mandino, O. (1968). The Greatest Saleman in the world. Bantam Books.

Cita Chicago (17th ed.)

Mandino, O.G. The Greatest Saleman in the World. New York: Bantam Books, 1968.

Cita MLA (9th ed.)

Mandino, O.G. The Greatest Saleman in the World. Bantam Books, 1968.