Mohammed Abdul Wahid Flayyih, and Ashwaq T.Kadhim. “The Role of the Four-Dimensional Product in Achieve Competitive Advantage”. Journal of Madenat Alelem University College 12, no. 2 (December 31, 2020): 172-185. Accessed December 21, 2024. https://journal.mauc.edu.iq/index.php/JMAUC/article/view/374.