Marra, J., Covassin, T., Shingles, R. R., Canady, R. B., & Mackowiak, T. (2010). Assessment of certified athletic trainers' levels of cultural competence in the delivery of health care. Journal of athletic training, 45(4), S. 380-385. http://www.ncbi.nlm.nih.gov/pmc/articles/PMC2902032/pdf/i1062-6050-45-4-380.pdf

Marra, Jeremy, Tracey Covassin, René R. Shingles, Renee Branch Canady, and Tom Mackowiak. "Assessment of Certified Athletic Trainers' Levels of Cultural Competence in the Delivery of Health Care." Journal of Athletic Training 45, no. 4 (2010): S. 380-385.

Marra, Jeremy, et al. "Assessment of Certified Athletic Trainers' Levels of Cultural Competence in the Delivery of Health Care." Journal of Athletic Training 45.4 (2010): S. 380-385.