Ali , D. (2012) “Effect of Exghange Learning with two Styles Variable and Stable Exercise In Learing Some basic Skills Of Attack Of basketball”, Journal of Physical Education, 24(2), p. 38. Available at: https://jcope.uobaghdad.edu.iq/index.php/jcope/article/view/1785 (Accessed: 9 May 2024).