APA (7th ed.) Citation

Harder, G., & Niemöller, M. (1965). Martin Niemöller. Berlin im Widerstand.

Chicago Style (17th ed.) Citation

Harder, Günther, and Martin Niemöller. "Martin Niemöller." Berlin Im Widerstand 1965.

MLA (8th ed.) Citation

Harder, Günther, and Martin Niemöller. "Martin Niemöller." Berlin Im Widerstand, 1965.

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