APA (7th ed.) Citation

Zehner, K. (1960). Psychologie (o.A.). Volk und Wissen.

Chicago Style (17th ed.) Citation

Zehner, Kurt. Psychologie. o.A. Berlin: Volk und Wissen, 1960.

MLA (8th ed.) Citation

Zehner, Kurt. Psychologie. o.A. Volk und Wissen, 1960.

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