Al – Jubouri, Maad, AND 		Al – Azi, Majed.
" The Impact of Strategy 4h in the Achievement of Fifth Grade Students in the History and Development of Their Systemic Thinking" <em>Journal of Tikrit university for humanities - مجلة جامعة تكريت للعلوم الانسانية</em> [Online], Volume 26 Number 6 (15 October 2019)