Goudas Μ., and Kolovelonis Α. “Factors Associated With Sport Students’ Length of Study and Degree Grade: A 6-Year Longitudinal Study”. Inquiries in Physical Education and Sport, vol. 20, no. 1, Mar. 2022, pp. 52-61, https://journals.lib.uth.gr/index.php/inquiries/article/view/1574.