APA (7th ed.) Citation

Bundesarchiv, Friedrich, K., Löw, A., & Heim, S. (2011). Polen, September 1939 - Juli 1941. Oldenbourg.

Chicago Style (17th ed.) Citation

Bundesarchiv, Klaus-Peter Friedrich, Andrea Löw, and Susanne Heim. Polen, September 1939 - Juli 1941. München: Oldenbourg, 2011.

MLA (8th ed.) Citation

Bundesarchiv, et al. Polen, September 1939 - Juli 1941. Oldenbourg, 2011.