APA (7th ed.) Citation

Ryan, C. (2010). The longest day: The d-day story June 6, 1944. Tauris Parke Paperbacks.

Chicago Style (17th ed.) Citation

Ryan, Cornelius. The Longest Day: The D-day Story June 6, 1944. London: Tauris Parke Paperbacks, 2010.

MLA (9th ed.) Citation

Ryan, Cornelius. The Longest Day: The D-day Story June 6, 1944. Tauris Parke Paperbacks, 2010.

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