Wolfrum, M, Rüst, C, Rosemann, T, Lepers, R & Knechtle, B. (2014). Changes in breaststroke swimming performances in national and international athletes competing between 1994 and 2011 - a comparison with freestyle swimming performances. BMC Sports Science, Medicine and Rehabilitation, 6 , 18. doi: 10.1186/2052-1847-6-18
APA (7th ed.) CitationWolfrum, M., Rüst, C., Rosemann, T., Lepers, R., & Knechtle, B. (2014). Changes in breaststroke swimming performances in national and international athletes competing between 1994 and 2011 - a comparison with freestyle swimming performances. BMC Sports Science, Medicine and Rehabilitation, 6, 18.
Chicago Style (17th ed.) CitationWolfrum, M., C. Rüst, T. Rosemann, R. Lepers, and B. Knechtle. "Changes in Breaststroke Swimming Performances in National and International Athletes Competing Between 1994 and 2011 - a Comparison with Freestyle Swimming Performances." BMC Sports Science, Medicine and Rehabilitation 6 (2014): 18.
MLA (9th ed.) CitationWolfrum, M., et al. "Changes in Breaststroke Swimming Performances in National and International Athletes Competing Between 1994 and 2011 - a Comparison with Freestyle Swimming Performances." BMC Sports Science, Medicine and Rehabilitation, 6, 2014, p. 18.