Martens, R. (1997). Successful coaching (Updated 2nd ed.). Human Kinetics.
Chicago Style aipamenaMartens, Rainer. Successful Coaching. Updated 2nd ed. Champaign, Ill: Human Kinetics, 1997.
MLA aipamenaMartens, Rainer. Successful Coaching. Updated 2nd ed. Human Kinetics, 1997.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.