Cita APA (7th ed.)

MACKENZIE, J. S. (1929). A manual of ethics (6thed.). University Tutorial Press.

Cita Chicago (17th ed.)

MACKENZIE, John S. A Manual of Ethics. 6thed. London: University Tutorial Press, 1929.

Cita MLA (9th ed.)

MACKENZIE, John S. A Manual of Ethics. 6thed. University Tutorial Press, 1929.