Hutajulu, Rahel Arthaida, Nadia Sarita, Edo Immanuel Sinaga, and Rosmaida Sinaga. “Eksploitasi Sumber Daya Alam Sumatera Utara Pada Masa Kolonial: Implikasi Dan Warisannya”. AR-RUMMAN: Journal of Education and Learning Evaluation 1, no. 2 (November 30, 2024): 173–179. Accessed June 14, 2026. https://www.rayyanjurnal.com/index.php/ar-rumman/article/view/3962.