APA (7th ed.) Citation

Buell, R. L. (1939). Poland: Key to Europe ((1. publ.).). Cape.

Chicago Style (17th ed.) Citation

Buell, Raymond Leslie. Poland: Key to Europe. (1. publ.). London: Cape, 1939.

MLA (9th ed.) Citation

Buell, Raymond Leslie. Poland: Key to Europe. (1. publ.). Cape, 1939.

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