Fry, A. C., Aro, T. A., Bauer, J. A., & Kraemer, W. J. (1993). A comparison of methods for determining kinematic properties of three barbell squat exercises. Journal of human movement studies, 24(2), S. 83-95.

Fry, Andrew C., Timothy A. Aro, Jeffrey A. Bauer, and William J. Kraemer. "A Comparison of Methods for Determining Kinematic Properties of Three Barbell Squat Exercises." Journal of Human Movement Studies 24, no. 2 (1993): S. 83-95.

Fry, Andrew C., Timothy A. Aro, Jeffrey A. Bauer, and William J. Kraemer. "A Comparison of Methods for Determining Kinematic Properties of Three Barbell Squat Exercises." Journal of Human Movement Studies 24.2 (1993): S. 83-95.