Abd El-Hamid Hassan Ali, M. & Ibrahim Ali Hassan, H. (2010). Directing some biomechanical indicators to improving heading ball from flying position of soccer players. World Journal of Sport Sciences, 3 (S), 1097-1105. Zugriff am 24.08.2011 unter http://www.idosi.org/wjss/3%28S%2910/128.pdf
APA (7th ed.) CitationAbd El-Hamid Hassan Ali, M., & Ibrahim Ali Hassan, H. (2010). Directing some biomechanical indicators to improving heading ball from flying position of soccer players. World Journal of Sport Sciences, 3(S), 1097-1105.
Chicago Style (17th ed.) CitationAbd El-Hamid Hassan Ali, M., and H. Ibrahim Ali Hassan. "Directing Some Biomechanical Indicators to Improving Heading Ball from Flying Position of Soccer Players." World Journal of Sport Sciences 3, no. S (2010): 1097-1105.
MLA (9th ed.) CitationAbd El-Hamid Hassan Ali, M., and H. Ibrahim Ali Hassan. "Directing Some Biomechanical Indicators to Improving Heading Ball from Flying Position of Soccer Players." World Journal of Sport Sciences, vol. 3, no. S, 2010, pp. 1097-1105.