APA (7th ed.) Citation

Frey, C., & Frey, C. M. (1999). Hitlers Weimar.

Chicago Style (17th ed.) Citation

Frey, Christian, and Christian Mitarb Frey. Hitlers Weimar. 1999.

MLA (8th ed.) Citation

Frey, Christian, and Christian Mitarb Frey. Hitlers Weimar. 1999.

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