Soons, B, Colman, V, Silva, A, Sanders, R & Persyn, U. (2009, 12. March). Reduction of velocity fluctuation and improvement of performance by undulating in breaststroke. Zugriff unter http://www.profedf.ufpr.br/reducing%20of%20vel%20fluctuation%20anf%20improv%20of%20prformance%20by%20ondulation.pdf
APA (7th ed.) CitationSoons, B., Colman, V., Silva, A., Sanders, R., & Persyn, U. Reduction of velocity fluctuation and improvement of performance by undulating in breaststroke. coachesinfo.com.
Chicago Style (17th ed.) CitationSoons, B., V. Colman, A. Silva, R. Sanders, and U. Persyn. "Reduction of Velocity Fluctuation and Improvement of Performance by Undulating in Breaststroke." Coachesinfo.com .
MLA (9th ed.) CitationSoons, B., et al. "Reduction of Velocity Fluctuation and Improvement of Performance by Undulating in Breaststroke." Coachesinfo.com, .