Duncan, R. O. (1954). Six-man football (Rev. ed.). Ronald Press.
Chicago Style (17th ed.) CitationDuncan, Ray O. Six-man Football. Rev. ed. New York: Ronald Press, 1954.
MLA (9th ed.) CitationDuncan, Ray O. Six-man Football. Rev. ed. Ronald Press, 1954.
Warning: These citations may not always be 100% accurate.