Mohammed, Khalid K., and Safa Adres Abboudi. 2021. “The Effect of Sustainable Leadership in Achieving Proactive Behavior An Analytical Study of the Views of a Sample of Iraqi Private University Teachers”. Tikrit Journal of Administrative and Economic Sciences 17 (54, 2):350-71. https://doi.org/10.25130/tjaes.17.54.2.21.