Lotfi, G., Tahmasbi, F., Forghani, M.H. and Szwarc, A. 2020. Effect of positive and negative dimensions of mental imagery and self-talk on learning of soccer kicking skill. Physical Education of Students. 24, 6 (Dec. 2020), 319–324. DOI:https://doi.org/10.15561/20755279.2020.0603.