APA (7th ed.) Citation

Frey, D. Angewandte Psychologie. Beltz.

Chicago Style (17th ed.) Citation

Frey, Dieter. Angewandte Psychologie. Weinheim: Beltz.

MLA (9th ed.) Citation

Frey, Dieter. Angewandte Psychologie. Beltz.

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