Nugroho, Ardiyanto W, Mukhlisi, and Tri Atmoko. “Efforts to Improve Ecotourism Management for Bekantan Conservation from visitors’ Perspectives: A Case Study in Balikpapan East Kalimantan”. Jurnal Penelitian Kehutanan Wallacea 8, no. 1 (March 29, 2019): 57-69. Accessed April 19, 2025. http://334012.libg.asia/index.php/wallacea/article/view/26166.