Prof.Dr.Hashim Nayef Hashim Al-Hachim, and Adnan Saad Tuama Al-Sukaini. “THE EFFECT OF VERTICAL INTEGRATION ON FINANCIAL PERFORMANCE (An Analytical Study in the General Company for Fertilizer Industry - Southern Region)”. Galaxy International Interdisciplinary Research Journal, vol. 11, no. 3, Mar. 2023, pp. 326-41, https://giirj.com/index.php/giirj/article/view/4783.