Ismail, Hemn Mohamad, و Didar Hamad Qadir, trans. "The Petrochemical Industry in the Energy Policy of the Kurdistan Region (A Study in Political Geography)". Twejer Journal 7, no. 1 (يوليو 21, 2024): 310–337. تاريخ الوصول سبتمبر 24, 2026. https://journals.soran.edu.iq/index.php/Twejer/article/view/418.