Nugraha, B S, L P Putri, and J Suprihanto. “Krayan Heart of Borneo: Indonesian Potential Tourism Destination Enjoyed by Malaysia”. KnE Social Sciences 3, no. 5 (May 23, 2018): 118–129. Accessed May 19, 2024. https://knepublishing.com/index.php/KnE-Social/article/view/2329.