Hale, S. A., & Hertel, J. (2005). Reliability and sensitivity of the Foot and Ankle Disability Index in subjects with chronic ankle instability. Journal of athletic training, 40(1), S. 35-40. http://www.ncbi.nlm.nih.gov/pmc/articles/PMC1088343/

Hale, Sheri A., and Jay Hertel. "Reliability and Sensitivity of the Foot and Ankle Disability Index in Subjects With Chronic Ankle Instability." Journal of Athletic Training 40, no. 1 (2005): S. 35-40.

Hale, Sheri A., and Jay Hertel. "Reliability and Sensitivity of the Foot and Ankle Disability Index in Subjects With Chronic Ankle Instability." Journal of Athletic Training 40.1 (2005): S. 35-40.