Momade, M. H., and M. R. Hainin. “Identifying Motivational and Demotivational Productivity Factors in Qatar Construction Projects”. Engineering, Technology & Applied Science Research 9, no. 2 (April 10, 2019): 3945–3948. Accessed January 29, 2025. https://etasr.com/index.php/ETASR/article/view/2577.