Awass, Omer. “Outlines of a Global Power-Field (GPF) Theory (Part 1): Mapping the Dynamics of the Modern World-System and Its Penetration in the Middle East C. 1850-1950”. Journal of World-Systems Research 27, no. 2 (August 14, 2021): 545–565. Accessed December 8, 2022. https://jwsr.pitt.edu/ojs/jwsr/article/view/1031.