Rossi, T., & Levitsky, K. (1996). Osteoid osteoma of the calcaneus: An unusual cause of hindfoot pain in an adolescent athlete. Journal of athletic training, 31(1), S. 71-73. http://www.ncbi.nlm.nih.gov/pmc/articles/PMC1318361/pdf/jathtrain00017-0073.pdf

Rossi, T., and K. Levitsky. "Osteoid Osteoma of the Calcaneus: An Unusual Cause of Hindfoot Pain in an Adolescent Athlete." Journal of Athletic Training 31, no. 1 (1996): S. 71-73.

Rossi, T., and K. Levitsky. "Osteoid Osteoma of the Calcaneus: An Unusual Cause of Hindfoot Pain in an Adolescent Athlete." Journal of Athletic Training 31.1 (1996): S. 71-73.