Saadi , R. ., and B. . Chrebah. “Sources of Psychological Stress of University Students During The Syrian Crisis (A Field Study on a Sample of Tishreen University Students)”. Tishreen University Journal- Arts and Humanities Sciences Series, vol. 38, no. 5, Jan. 2017, https://journal.tishreen.edu.sy/index.php/humlitr/article/view/2379.