APA (7th ed.) Citation

Bartel, W. (1971). Karl Liebknecht. Bibliografisches Institut.

Chicago Style (17th ed.) Citation

Bartel, Walter. Karl Liebknecht. Leipzig: Bibliografisches Institut, 1971.

MLA (8th ed.) Citation

Bartel, Walter. Karl Liebknecht. Bibliografisches Institut, 1971.

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