Robby Ardiansyah, Djoko Soelistya, and Eva Desembrianita. “Linking Transformational Leadership and KPI Systems to Employee Performance: The Mediating Role of Expectancy-Based Motivation in Public Transportation”. Sharia Economic and Management Business Journal (SEMBJ) 7, no. 3 (August 31, 2026): 97-110. Accessed September 3, 2026. https://www.siducat.org/index.php/sembj/article/view/2668.