Salter, C. W., Sinclair, P. J., & Portus, M. R. (2007). The associations between fast bowling technique and ball release speed: A pilot study of the within-bowler and between-bowler approaches. Journal of sports sciences, 25(11), S. 1279-1285. doi:10.1080/02640410601096822

Salter, Craig W., Peter James Sinclair, and Marc R. Portus. "The Associations between Fast Bowling Technique and Ball Release Speed: A Pilot Study of the Within-bowler and Between-bowler Approaches." Journal of Sports Sciences 25, no. 11 (2007): S. 1279-1285.

Salter, Craig W., Peter James Sinclair, and Marc R. Portus. "The Associations between Fast Bowling Technique and Ball Release Speed: A Pilot Study of the Within-bowler and Between-bowler Approaches." Journal of Sports Sciences 25.11 (2007): S. 1279-1285.