APA (7th ed.) Citation

Zumkley, H. (1978). Aggression und Katharsis. Motivationsforschung.

Chicago Style (17th ed.) Citation

Zumkley, Horst. "Aggression Und Katharsis." Motivationsforschung 1978.

MLA (8th ed.) Citation

Zumkley, Horst. "Aggression Und Katharsis." Motivationsforschung, 1978.

Warning: These citations may not always be 100% accurate.