Umar Mustofa, Arief Hidayat, and Riki Herliansyah. “PENDEKATAN SKALOGRAM DAN SENTRALITAS UNTUK PENENTUAN PUSAT PERTUMBUHAN WILAYAH: STUDI KASUS KABUPATEN MAHAKAM ULU”. Journal of Innovation Research and Knowledge 5, no. 3 (August 1, 2025): 3259–3274. Accessed August 6, 2025. https://www.bajangjournal.com/index.php/JIRK/article/view/10932.