APA (7th ed.) Citation

Halle, A. S. (1993). The German Quakers and the Third Reich. German history.

Chicago Style (17th ed.) Citation

Halle, Anna Sabine. "The German Quakers and the Third Reich." German History 1993.

MLA (8th ed.) Citation

Halle, Anna Sabine. "The German Quakers and the Third Reich." German History, 1993.

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