APA (7th ed.) Citation

Kropp, G. (1950). Erkenntnistheorie. Erkenntnistheorie.

Chicago Style (17th ed.) Citation

Kropp, Gerhard. "Erkenntnistheorie." Erkenntnistheorie 1950.

MLA (8th ed.) Citation

Kropp, Gerhard. "Erkenntnistheorie." Erkenntnistheorie, 1950.

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