APA (7th ed.) Citation

Green, W. (1970). The observer's book of aircraft (19. ed.). Warne.

Chicago Style (17th ed.) Citation

Green, William. The Observer's Book of Aircraft. 19. ed. London, New York: Warne, 1970.

MLA (9th ed.) Citation

Green, William. The Observer's Book of Aircraft. 19. ed. Warne, 1970.