Gunawan, Ikhsan, and Hamdi Maryoni. “POTENSI PENGEMBANGAN EKONOMI DI KABUPATEN ROKAN HULU”. Jurnal Development 5, no. 1 (June 19, 2017): 12-27. Accessed November 22, 2024. https://jurnal.umjambi.ac.id/JD/article/view/41.