Gümüşdağ, H., Bastık, C., Yamaner, F., Kartal, A., & Cisem, Ü. N. L. Ü. (2013). Burnout in professional soccer players: the role of aggression and anxiety. Interrnational Refereed Academic Social Sciences Journal ,10 (4),Jel: I10-I12-I18-I19.