APA (7th ed.) Citation

(1920). Upper Silesia: (Handbook ... of the Foreign Office.). H. M. Stationery Office.

Chicago Style (17th ed.) Citation

Upper Silesia: (Handbook ... of the Foreign Office.). London: H. M. Stationery Office, 1920.

MLA (9th ed.) Citation

Upper Silesia: (Handbook ... of the Foreign Office.). H. M. Stationery Office, 1920.

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