Liakou Ευαγγελία, Digelidis Νικόλαος, Chatzigeorgiadis Αντώνης, and Papaioannou Αθανάσιος. “Self-Concept, Achievement Goals and Bullying in Physical Education”. Inquiries in Physical Education and Sport 8, no. 1 (April 30, 2010): 1–13. Accessed May 12, 2024. https://journals.lib.uth.gr/index.php/inquiries/article/view/1340.