Cita APA (7a ed.)

Donagan, A. (1965). Philosophy of history. Macmillan Company.

Cita Chicago Style (17a ed.)

Donagan, Alan. Philosophy of History. New York: Macmillan Company, 1965.

Cita MLA (9a ed.)

Donagan, Alan. Philosophy of History. Macmillan Company, 1965.