Mahmood, Yazen, Manaf Raewf, and Zaid AL- Hamadany. “A Study on the Perceptual Relationship Between Overtime and Output”. Cihan University-Erbil Journal of Humanities and Social Sciences 3, no. 1 (June 30, 2019): 27-31. Accessed March 29, 2024. https://journals.cihanuniversity.edu.iq/index.php/cuejhss/article/view/32.