APA (7th ed.) Citation

Kollwitz, K., & Bohnke-Kollwitz, J. (1989). Die Tagebücher.

Chicago Style (17th ed.) Citation

Kollwitz, Käthe, and Jutta Bohnke-Kollwitz. Die Tagebücher. Berlin, 1989.

MLA (8th ed.) Citation

Kollwitz, Käthe, and Jutta Bohnke-Kollwitz. Die Tagebücher. 1989.

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