Cita APA (7a ed.)

Douglas, W. O. (1951). Strange lands and friendly people. Harper & Brothers.

Cita Chicago Style (17a ed.)

Douglas, William O. Strange Lands and Friendly People. New York: Harper & Brothers, 1951.

Cita MLA (9a ed.)

Douglas, William O. Strange Lands and Friendly People. Harper & Brothers, 1951.