Ungerechts, B, Persyn, U & Colman, V. (2000, 09. May). Analysis of swimming techniques using vortex traces. Zugriff unter http://www.coachesinfo.com/index.php?option=com_content&view=article&id=205:swimming-isbs-vorextraces&catid=74:articlesoncoachesinfoservice&Itemid=136
APA (7th ed.) CitationUngerechts, B., Persyn, U., & Colman, V. (2000). Analysis of swimming techniques using vortex traces. coachesinfo.com.
Chicago Style (17th ed.) CitationUngerechts, B., U. Persyn, and V. Colman. "Analysis of Swimming Techniques Using Vortex Traces." Coachesinfo.com 2000.
MLA (9th ed.) CitationUngerechts, B., et al. "Analysis of Swimming Techniques Using Vortex Traces." Coachesinfo.com, 2000.
Warning: These citations may not always be 100% accurate.