APA (7th ed.) Citation

Klopfer, K. E. (1891). Zur "Judenfrage".

Chicago Style (17th ed.) Citation

Klopfer, Karl Ed. Zur "Judenfrage". 1891.

MLA (9th ed.) Citation

Klopfer, Karl Ed. Zur "Judenfrage". 1891.

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