APA (7th ed.) Citation

Zarske, W., & Löbsack, W. (1940). Sechs Monate Reichsgau Danzig-Westpreußen.

Chicago Style (17th ed.) Citation

Zarske, Wilhelm, and Wilhelm Löbsack. Sechs Monate Reichsgau Danzig-Westpreußen. 1940.

MLA (8th ed.) Citation

Zarske, Wilhelm, and Wilhelm Löbsack. Sechs Monate Reichsgau Danzig-Westpreußen. 1940.

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