APA (7th ed.) Citation

Freeman, R. A. (1977). B-17 Fortress at war. Allan.

Chicago Style (17th ed.) Citation

Freeman, Roger Anthony. B-17 Fortress at War. London: Allan, 1977.

MLA (9th ed.) Citation

Freeman, Roger Anthony. B-17 Fortress at War. Allan, 1977.

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