Zen, Agustian, Siminto Siminto, Muhammad Ade Kurnia Harahap, Yanto Budi Prasetya, and Abu Muna Almaududi Ausat. 2023. “Effective Leadership: A Literature Review of Concepts, Characteristics, and Best Practices ”. Innovative: Journal Of Social Science Research 3 (2):2209-19. http://j-innovative.org/index.php/Innovative/article/view/430.