APA (7th ed.) Citation

Ursin, H., & Olff, M. (1995). Aggression, defense, and coping in humans. Aggressive behavior, 21(1), 13-19.

Chicago Style (17th ed.) Citation

Ursin, H., and M. Olff. "Aggression, Defense, and Coping in Humans." Aggressive Behavior 21, no. 1 (1995): 13-19.

MLA (8th ed.) Citation

Ursin, H., and M. Olff. "Aggression, Defense, and Coping in Humans." Aggressive Behavior, vol. 21, no. 1, 1995, pp. 13-19.