Ray, T. R., Eck, J. C., Covington, L. A., Murphy, R. B., Williams, R & Knudtson, J. (2001, 20. November). Use of oral creatine as an ergogenic aid for increased sports performance: Perceptions of adolescent athletes. Zugriff unter http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?cmd=Retrieve&db=PubMed&list_uids=11440329&dopt=Abstract
APA (7th ed.) CitationRay, T. R., Eck, J. C., Covington, L. A., Murphy, R. B., Williams, R., & Knudtson, J. (2001). Use of oral creatine as an ergogenic aid for increased sports performance: Perceptions of adolescent athletes. Southern Medical Journal, 94(6), 608-612.
Chicago Style (17th ed.) CitationRay, T. R., J. C. Eck, L. A. Covington, R. B. Murphy, R. Williams, and J. Knudtson. "Use of Oral Creatine as an Ergogenic Aid for Increased Sports Performance: Perceptions of Adolescent Athletes." Southern Medical Journal 94, no. 6 (2001): 608-612.
MLA (9th ed.) CitationRay, T. R., et al. "Use of Oral Creatine as an Ergogenic Aid for Increased Sports Performance: Perceptions of Adolescent Athletes." Southern Medical Journal, vol. 94, no. 6, 2001, pp. 608-612.