Zingg, M. A., Wolfrum, M, Rüst, C. A., Rosemann, T, Lepers, R & Knechtle, B. (2014). The fastest female butterfly swimmers were younger than the fastest male butterfly swimmers. Medicina Sportiva, 18 (1), 1-9. doi: 10.5604/17342260.1094778
APA (7th ed.) CitationZingg, M. A., Wolfrum, M., Rüst, C. A., Rosemann, T., Lepers, R., & Knechtle, B. (2014). The fastest female butterfly swimmers were younger than the fastest male butterfly swimmers. Medicina Sportiva, 18(1), 1-9.
Chicago Style (17th ed.) CitationZingg, M. A., M. Wolfrum, C. A. Rüst, T. Rosemann, R. Lepers, and B. Knechtle. "The Fastest Female Butterfly Swimmers Were Younger than the Fastest Male Butterfly Swimmers." Medicina Sportiva 18, no. 1 (2014): 1-9.
MLA (9th ed.) CitationZingg, M. A., et al. "The Fastest Female Butterfly Swimmers Were Younger than the Fastest Male Butterfly Swimmers." Medicina Sportiva, vol. 18, no. 1, 2014, pp. 1-9.