APA (7th ed.) Citation

Bon, G. l., & Dingeldey, H. (1973). Psychologie der Massen. Kröner.

Chicago Style (17th ed.) Citation

Bon, Gustave le, and Helmut Dingeldey. Psychologie Der Massen. Stuttgart: Kröner, 1973.

MLA (8th ed.) Citation

Bon, Gustave le, and Helmut Dingeldey. Psychologie Der Massen. Kröner, 1973.

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