APA (7e ed.) Bronvermelding

Offstein, E. H., Morwick, J. M., & Griffith, S. W. (2009). Gridiron leadership: Winning strategies and breakthrough tactics. Praeger.

Chicago (17e ed.) Bronvermelding

Offstein, Evan H., Jason M. Morwick, en Scott W. Griffith. Gridiron Leadership: Winning Strategies and Breakthrough Tactics. Santa Barbara, CA: Praeger, 2009.

MLA (9e ed.) Bronvermelding

Offstein, Evan H., et al. Gridiron Leadership: Winning Strategies and Breakthrough Tactics. Praeger, 2009.