APA (7th ed.) Citation

Colonna, B. d. (1939). Poland from the inside. Cranton.

Chicago Style (17th ed.) Citation

Colonna, Bertram de. Poland from the Inside. London: Cranton, 1939.

MLA (9th ed.) Citation

Colonna, Bertram de. Poland from the Inside. Cranton, 1939.

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