APA (7th ed.) Citation

Boyens, A. (1985). Protestanten im Widerstand. Dr. [Doktor] Karl Sack.

Chicago Style (17th ed.) Citation

Boyens, Armin. "Protestanten Im Widerstand." Dr. [Doktor] Karl Sack 1985.

MLA (8th ed.) Citation

Boyens, Armin. "Protestanten Im Widerstand." Dr. [Doktor] Karl Sack, 1985.

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