“The Role of Transformational Leadership in Improving the Quality of Health ServicesA Field Study in Private Hospitals in Sana’a Governorate”. Sana’a University Journal of Human Sciences 5, no. 9 (September 28, 2026): 378–420. Accessed September 28, 2026. https://journals.su.edu.ye/index.php/jhs/article/view/2744.