Masykur, Masykur, Hartono Salim, Aida Fithri, and Widya Sari. “Status of Bird Conservation at the Ketambe Research Station, Gunung Leuser National Park”. Jurnal Penelitian Pendidikan IPA 9, no. 4 (April 30, 2023): 1898–1901. Accessed March 28, 2024. https://www.jppipa.unram.ac.id/index.php/jppipa/article/view/3114.