Gaya APA
Eys, M, A., Beauchamp, M, R. (2008).
Group dynamics in exercise and sport psychology : contemporary themes .
London:
Routledge.
Gaya MLA
Eys, Mark, A.., Beauchamp, Mark, R..
"Group dynamics in exercise and sport psychology : contemporary themes".
London:
Routledge,
2008.
Text.