Messing, G, Perez, J & Blaylock, J. (2000, 28. February). Sacramento United Soccer Program Player Development Guidelines. Zugriff unter http://www.sayso.org/playerdevelopmentguidelines.htm
APA (7th ed.) CitationMessing, G., Perez, J., & Blaylock, J. Sacramento United Soccer Program Player Development Guidelines.
Chicago Style (17th ed.) CitationMessing, G., J. Perez, and J. Blaylock. Sacramento United Soccer Program Player Development Guidelines.
MLA (9th ed.) CitationMessing, G., et al. Sacramento United Soccer Program Player Development Guidelines.
Warning: These citations may not always be 100% accurate.