APA (7th ed.) Citation

Bell. (1979). U.S. air force colours 1926-1942. Arms and Armour Press.

Chicago Style (17th ed.) Citation

Bell. U.S. Air Force Colours 1926-1942. London: Arms and Armour Press, 1979.

MLA (8th ed.) Citation

Bell. U.S. Air Force Colours 1926-1942. Arms and Armour Press, 1979.

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