Hopkins, W. G. & Hewson, D. J. (2001, 03. September). Variability of competitive performance of distance runners. Zugriff unter http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?cmd=Retrieve&db=PubMed&list_uids=11528349&dopt=Abstract
APA-Zitierstil (7. Ausg.)Hopkins, W. G., & Hewson, D. J. (2001). Variability of competitive performance of distance runners. Medicine & Science in Sports & Exercise, 33(9), 1588-1592.
Chicago-Zitierstil (17. Ausg.)Hopkins, W. G., und D. J. Hewson. "Variability of Competitive Performance of Distance Runners." Medicine & Science in Sports & Exercise 33, no. 9 (2001): 1588-1592.
MLA-Zitierstil (9. Ausg.)Hopkins, W. G., und D. J. Hewson. "Variability of Competitive Performance of Distance Runners." Medicine & Science in Sports & Exercise, vol. 33, no. 9, 2001, pp. 1588-1592.