Adel, Omar, and Maisa Latif. “Tracing the Development of Cognitive Variables, Regardless Kinesthetic Sense to Learn and Retain Some Kind of Olympic Swimming”. Journal of Physical Education, vol. 22, no. 3, Sept. 2010, p. 180, https://www.jcope.uobaghdad.edu.iq/index.php/jcope/article/view/1562.