APA (7th ed.) Zitazioa
Hyman, M. (2009). Until it hurts: America's obsession with youth sports and how it harms our kids. Beacon Press.
Chicago Style (17th ed.) Zitazioa
Hyman, Mark. Until It Hurts: America's Obsession with Youth Sports and How It Harms Our Kids. Boston: Beacon Press, 2009.
MLA (9th ed.) Zitazioa
Hyman, Mark. Until It Hurts: America's Obsession with Youth Sports and How It Harms Our Kids. Beacon Press, 2009.
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