Shafiee, S., Fikoouei, M. H., & Benar, N. (2016). Studying the relationship between leadership style of coaches and sportsmanship commitment of athletes (A case study of professional athletes in I.R. I. Karate Super League). Pedagogics, Psychology, Medical-Biological Problems of Physical Training and Sports, 20(3), 52–61. https://doi.org/10.15561/18189172.2016.0308