Jabbar, Mohammed Abdulretha, and Salman Hussein Abdullah. “The Relationship Between Business Models and Modern Profit Models”. Tikrit Journal of Administrative and Economic Sciences 17, no. 54, 1 (June 30, 2021): 51–66. Accessed October 28, 2026. https://www.tjaes.org/index.php/tjaes/article/view/1582.