Al-Tarawneh, M., and L. Al-Ma’aitah. “The Effectiveness of Using the Multi-Level ‎Self-Learning Strategy on Teaching Basic ‎Skills in Breaststroke Swimming Among ‎Students of the Faculty of Sports Sciences, ‎Mu’tah University”. Jordan Journal of Educational Sciences, vol. 20, no. 2, Sept. 2024, pp. 347-58, https://jjes.yu.edu.jo/index.php/jjes/article/view/467.