APA (7e ed.) Bronvermelding

Peterson, R. (1997). Pigskin: The early years of pro football. Oxford University Press.

Chicago (17e ed.) Bronvermelding

Peterson, Robert. Pigskin: The Early Years of Pro Football. New York: Oxford University Press, 1997.

MLA (9e ed.) Bronvermelding

Peterson, Robert. Pigskin: The Early Years of Pro Football. Oxford University Press, 1997.