APA (7th ed.) Citation

Gibson, G. 63 days: The story of the Warsaw rising. London: Democratic Press and Liberty Publications.

Chicago Style (17th ed.) Citation

Gibson, George. 63 Days: The Story of the Warsaw Rising. London: Democratic Press and Liberty Publications.

MLA (8th ed.) Citation

Gibson, George. 63 Days: The Story of the Warsaw Rising. London: Democratic Press and Liberty Publications.

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