“Diversity and Abundance of Mammals and Aves in the Gunung Leuser National Park Area, Bukit Lawang, Bahorok District, Langkat Regency, North Sumatra”. International Journal of Ecophysiology 6, no. 2 (September 27, 2024): 159–166. Accessed February 5, 2026. https://idjpcr.usu.ac.id/ijoep/article/view/18060.