APA (7th ed.) Citation

(1938). Psyhologie der Massen. Alfred Kröner.

Chicago Style (17th ed.) Citation

Psyhologie Der Massen. Stuttgart: Alfred Kröner, 1938.

MLA (8th ed.) Citation

Psyhologie Der Massen. Alfred Kröner, 1938.

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