APA (7. basım) Alıntı

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

Chicago Style (17. basım) Atıf

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

MLA (9th ed.) Atıf

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