APA (7th ed.) Citation

Duncan, R. O. (1940). Six-man football. A.S. Barnes & company.

Chicago Style (17th ed.) Citation

Duncan, Ray O. Six-man Football. New York: A.S. Barnes & company, 1940.

MLA (9th ed.) Citation

Duncan, Ray O. Six-man Football. A.S. Barnes & company, 1940.