Cita APA (7th ed.)

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

Cita Chicago (17th ed.)

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

Cita MLA (9th ed.)

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