ABBOOD, ALI, AND 		Hassan, Ahmed.
" The Effectiveness of Employing a Teaching Strategy Based on Mock System Diagrams in Achieving Social studies for Second-grade Students and Their Orientation towards Them" <em>Journal of Tikrit university for humanities - مجلة جامعة تكريت للعلوم الانسانية</em> [Online], Volume 27 Number 3 (6 May 2020)