Dyfyniad APA
Carr, J. F., & Willis, C. (2010). The man who built the National Football League. Scarecrow Press.
Dyfyniad Arddull Chicago
Carr, Joe F., and Chris Willis. The Man Who Built the National Football League. Lanham: Scarecrow Press, 2010.
Dyfyniad MLA
Carr, Joe F., and Chris Willis. The Man Who Built the National Football League. Scarecrow Press, 2010.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.