APA (7th ed.) Citation

Batson, C. D. (1991). The altruism question: Toward a social psychological answer. L. Erlbaum.

Chicago Style (17th ed.) Citation

Batson, C. Daniel. The Altruism Question: Toward a Social Psychological Answer. Hillsdale, N.J: L. Erlbaum, 1991.

MLA (9th ed.) Citation

Batson, C. Daniel. The Altruism Question: Toward a Social Psychological Answer. L. Erlbaum, 1991.