Ling, Jonathan, Istvan Soos, Ibolya Dizmatsek, Adedokun Ojelabi, Jaromir Simonek, Iulianna Boros-Balint, Peter Szabo, Attila Szabo, and Pal Hamar. “Perceived Autonomy Support and Motivation in Young People: A Comparative Investigation of Physical Education and Leisure-Time in Four Countries”. Europe’s Journal of Psychology 15, no. 3 (September 27, 2019): 509-530. Accessed April 19, 2024. https://ejop.psychopen.eu/index.php/ejop/article/view/1735.