Cita APA (7a ed.)

Nagel, T. (1970). The possibility of altruism. Clarendon.

Cita Chicago Style (17a ed.)

Nagel, Thomas. The Possibility of Altruism. Oxford: Clarendon, 1970.

Cita MLA (9a ed.)

Nagel, Thomas. The Possibility of Altruism. Clarendon, 1970.