Yasin, I., M. Tan, F. F. Colakoglu, and M. Sahin. “Investigation of the Problem Solving and Excellence Levels of the Secondary School Students Who Do Sports and Does Not”. Asian Journal of Education and Training, vol. 6, no. 3, Aug. 2020, pp. 499-04, doi:10.20448/journal.522.2020.63.499.504.