Campbell, G., & Evans, I. (1957). The Book of Flags: Third Edition. Oxford University Press.
Chicago Style (17th ed.) CitationCampbell, Gordon, and I.O Evans. The Book of Flags: Third Edition. London: Oxford University Press, 1957.
MLA (9th ed.) CitationCampbell, Gordon, and I.O Evans. The Book of Flags: Third Edition. Oxford University Press, 1957.
Warning: These citations may not always be 100% accurate.