Cita APA (7th ed.)

Garraty , J. A., & Gay, P. (1981). The Columbia history of the world. Dorset Press.

Cita Chicago (17th ed.)

Garraty , John A., i Peter Gay. The Columbia History of the World. New York: Dorset Press, 1981.

Cita MLA (9th ed.)

Garraty , John A., i Peter Gay. The Columbia History of the World. Dorset Press, 1981.