Pezzullo, D. J., Karas, S., & Irrgang, J. J. (1995). Functional plyometric exercises for the throwing athlete. Journal of athletic training, 30(1), S. 22-26. http://www.ncbi.nlm.nih.gov/pmc/articles/PMC1317824/pdf/jathtrain00021-0024.pdf

Pezzullo, David J., Steven Karas, and James J. Irrgang. "Functional Plyometric Exercises for the Throwing Athlete." Journal of Athletic Training 30, no. 1 (1995): S. 22-26.

Pezzullo, David J., Steven Karas, and James J. Irrgang. "Functional Plyometric Exercises for the Throwing Athlete." Journal of Athletic Training 30.1 (1995): S. 22-26.