شريقي ط., and حسيكة خ. “The Impact of Exports and Imports of Services on Gross Domestic Product (GDP) in Syria (1980-2017)”. Latakia University Journal - Economic and Legal Sciences Series, vol. 42, no. 2, June 2020, https://journal.latakia-univ.edu.sy/index.php/econlaw/article/view/9652.