APA (7th ed.) Citation

Eron, L. D., Walder, L. O., & Lefkowitz, M. M. (1971). Learning of aggression in children. Little, Brown.

Chicago Style (17th ed.) Citation

Eron, Leonard D., Leopold Oscar Walder, and Monroe M. Lefkowitz. Learning of Aggression in Children. Boston: Little, Brown, 1971.

MLA (9th ed.) Citation

Eron, Leonard D., et al. Learning of Aggression in Children. Little, Brown, 1971.