APA Citation
Zahn-Waxler, C., Cummings, E., & Iannotti, R. (1986). Altruism and aggression: Biological and social origins. New York: Cambridge University Press.
Chicago Style CitationZahn-Waxler, Carolyn, E.Mark Cummings, and Ronald Iannotti. Altruism and Aggression: Biological and Social Origins. New York: Cambridge University Press, 1986.
MLA CitationZahn-Waxler, Carolyn, E.Mark Cummings, and Ronald Iannotti. Altruism and Aggression: Biological and Social Origins. New York: Cambridge University Press, 1986.
Warning: These citations may not always be 100% accurate.