Gaya APA

Papaioannou, A, G., Hackfort, D. (2014). Routledge Companion to Sport and Exercise Psychology: Global perspectives and fundamental concepts . United Kingdom: Routledge.

Gaya MLA

Papaioannou, Athanasios, G.., Hackfort, Dieter. "Routledge Companion to Sport and Exercise Psychology: Global perspectives and fundamental concepts". United Kingdom: Routledge, 2014. Text.