Helsen, W. F., Starkes, J. L. & van Winckel, J. (2001, 22. November). Effect of a change in selection year on success in male soccer players. Zugriff unter http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?cmd=Retrieve&db=PubMed&list_uids=11534065&dopt=Abstract
APA-Zitierstil (7. Ausg.)Helsen, W. F., Starkes, J. L., & van Winckel, J. (2001). Effect of a change in selection year on success in male soccer players. American Journal of Human Biology, 12, 729-735.
Chicago-Zitierstil (17. Ausg.)Helsen, W. F., J. L. Starkes, und J. van Winckel. "Effect of a Change in Selection Year on Success in Male Soccer Players." American Journal of Human Biology 12 (2001): 729-735.
MLA-Zitierstil (9. Ausg.)Helsen, W. F., et al. "Effect of a Change in Selection Year on Success in Male Soccer Players." American Journal of Human Biology, 12, 2001, pp. 729-735.