Mohammed, Mustafa, and Nuha Dahi. “Bullying in Primary School Pupils / 1st Kurk and Its Relationship With Gender”. Journal of Physical Education 32, no. 2 (June 30, 2020): 20-25. Accessed August 14, 2021. https://jcope.uobaghdad.edu.iq/index.php/jcope/article/view/989.