Cita APA (7a ed.)

Walsh, W. (1960). Philosophy of history: An introduction. Harper Torchbooks.

Cita Chicago Style (17a ed.)

Walsh, W.H. Philosophy of History: An Introduction. New York: Harper Torchbooks, 1960.

Cita MLA (8a ed.)

Walsh, W.H. Philosophy of History: An Introduction. Harper Torchbooks, 1960.