Cita APA (7a ed.)

Gert, B. (2005). Morality: Its nature and justification (Rev. ed.). Oxford University Press.

Cita Chicago Style (17a ed.)

Gert, Bernard. Morality: Its Nature and Justification. Rev. ed. Oxford ; New York: Oxford University Press, 2005.

Cita MLA (9a ed.)

Gert, Bernard. Morality: Its Nature and Justification. Rev. ed. Oxford University Press, 2005.