Clark, K. P., Rieger, R. H., Bruno, R. F. & Stearne, D. J. (2019). The NFL combine 40-yard dash: How important is maximum velocity? The Journal of Strength and Conditioning Research, 33 (6), 1542-1550. doi: 10.1519/JSC.0000000000002081
APA (7th ed.) CitationClark, K. P., Rieger, R. H., Bruno, R. F., & Stearne, D. J. (2019). The NFL combine 40-yard dash: How important is maximum velocity? The Journal of Strength and Conditioning Research, 33(6), 1542-1550.
Chicago Style (17th ed.) CitationClark, K. P., R. H. Rieger, R. F. Bruno, and D. J. Stearne. "The NFL Combine 40-yard Dash: How Important Is Maximum Velocity?" The Journal of Strength and Conditioning Research 33, no. 6 (2019): 1542-1550.
MLA (9th ed.) CitationClark, K. P., et al. "The NFL Combine 40-yard Dash: How Important Is Maximum Velocity?" The Journal of Strength and Conditioning Research, vol. 33, no. 6, 2019, pp. 1542-1550.