Cita APA (7a ed.)

Collard, D. (1978). Altruism and economy: A study in non-selfish economics. Martin Robertson.

Cita Chicago Style (17a ed.)

Collard, David. Altruism and Economy: A Study in Non-selfish Economics. Oxford: Martin Robertson, 1978.

Cita MLA (9a ed.)

Collard, David. Altruism and Economy: A Study in Non-selfish Economics. Martin Robertson, 1978.