1.
Soltani A, Roslan S, Abdullah MC, Jan CC. Effects of manipulating optimal challenge in a music intervention program on situational intrinsic motivation among people with intellectual disability. EJOP [Internet]. 2011Aug.26 [cited 2024Apr.24];7(3):487-01. Available from: https://ejop.psychopen.eu/index.php/ejop/article/view/145