Zafra, A. O., Ortega, E, Ato, M, Lozano, F. J., de los Fayos, E. G. & Ortin, F. J. (2010). Infrigements of the laws of the game and youth soccer categories: A descriptive study. Journal of Human Sport & Exercise, 5 (1), 71-83. Zugriff am 24.05.2011 unter http://www.jhse.ua.es/index.php/jhse/article/viewArticle/89
APA (7th ed.) CitationZafra, A. O., Ortega, E., Ato, M., Lozano, F. J., de los Fayos, E. G., & Ortin, F. J. (2010). Infrigements of the laws of the game and youth soccer categories: A descriptive study. Journal of Human Sport & Exercise, 5(1), 71-83.
Chicago Style (17th ed.) CitationZafra, A. O., E. Ortega, M. Ato, F. J. Lozano, E. G. de los Fayos, and F. J. Ortin. "Infrigements of the Laws of the Game and Youth Soccer Categories: A Descriptive Study." Journal of Human Sport & Exercise 5, no. 1 (2010): 71-83.
MLA (9th ed.) CitationZafra, A. O., et al. "Infrigements of the Laws of the Game and Youth Soccer Categories: A Descriptive Study." Journal of Human Sport & Exercise, vol. 5, no. 1, 2010, pp. 71-83.