APA (7e ed.) Bronvermelding

Gert, B. (1998). Morality: Its nature and justification. Oxford University Press.

Chicago (17e ed.) Bronvermelding

Gert, Bernard. Morality: Its Nature and Justification. New York: Oxford University Press, 1998.

MLA (9e ed.) Bronvermelding

Gert, Bernard. Morality: Its Nature and Justification. Oxford University Press, 1998.