Arslanoğlu, Erkal, Murat Tekin, Cansel Arslanoğlu, and İlker Özmutlu. “Investigation of Anxiety Levels and Basic Psychological Needs of Volleyball Referee Accoarding to Different Variables”. Journal of Human Sciences 7, no. 2 (November 21, 2010): 985–995. Accessed December 30, 2024. https://j-humansciences.com/ojs/index.php/IJHS/article/view/1215.