Hamad, M., and S. Kharanbeh. “Intellectual Life and Its Effects on Construction Renaissance in Egypt During the Periods of the Two Caliphs Al-Ä€mir Bi-Aḥkām Allah and Al-Ḥāfiẓ Li-Dīnillāh (1101-1149 AD)”. The International Journal of Humanities & Social Studies, vol. 7, no. 2, Feb. 2019, doi:10.24940/theijhss/2019/v7/i2/HS1902-027.