Letzelter, H & Freitag, W. (1983). Stroke Length and Stroke Frequency Variations in Men's and Women's 100-m Freestyle Swimming. In A. P. Hollander, P. A. Huijing & G. de Groot (Hrsg.), Biomechanics and Medicine in Swimming (International Series on Sport Sciences, 14, Champaign, Illinois: Human Kinetics Publishers, 1983. - S. 315 - 322: Abb., Tab., S. 315-322). Champaign: Human Kinetics.
APA (7th ed.) CitationLetzelter, H., & Freitag, W. (1983). Stroke Length and Stroke Frequency Variations in Men's and Women's 100-m Freestyle Swimming Biomechanics and Medicine in Swimming, 315-322.
Chicago Style (17th ed.) CitationLetzelter, H., and W. Freitag. "Stroke Length and Stroke Frequency Variations in Men's and Women's 100-m Freestyle Swimming." Biomechanics and Medicine in Swimming 1983: 315-322.
MLA (9th ed.) CitationLetzelter, H., and W. Freitag. "Stroke Length and Stroke Frequency Variations in Men's and Women's 100-m Freestyle Swimming." Biomechanics and Medicine in Swimming, 1983, pp. 315-322.