Mayrudin, Yeby, Nabilla Husna, and Fanny Yuliati. “Formal and Informal Leadership Power Contestation in Public Policy and Daily Politics”. Journal of Political Issues 2, no. 1 (July 4, 2020): 1-9. Accessed August 3, 2020. http://jpi.ubb.ac.id/index.php/JPI/article/view/30.