Nababan, Astri, and Budiwirman Budiwirman. “Mudo Barapi: Vivid Young Spirit”. Science and Environmental Journal for Postgraduate 3, no. 2 (July 18, 2021): 5-12. Accessed April 27, 2024. http://senjop.ppj.unp.ac.id/index.php/senjop/article/view/94.