Arda Meylia, S., & Haris Mustari, A. (2022). Distribution, Population, and Habitat of Siamang (Symphalangus syndactylus) in Bulu Mario, South Tapanuli. Jurnal Penelitian Hutan Dan Konservasi Alam, 19(1), 101–118. Diambil dari https://ejournal.aptklhi.org/index.php/JPHKA/article/view/616