APA (7th ed.) Citation

Wirsing, G. (1940). Der Krieg 1939/40 in Karten. Knorr & Hirth.

Chicago Style (17th ed.) Citation

Wirsing, Giselher. Der Krieg 1939/40 in Karten. München: Knorr & Hirth, 1940.

MLA (8th ed.) Citation

Wirsing, Giselher. Der Krieg 1939/40 in Karten. Knorr & Hirth, 1940.

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