Ali, Muhammad Ridzwan, Henry Bernard, and Goro Hanya. “The Population Size and Distribution of Proboscis Monkeys (Nasalis Larvatus) Based on a Brief Study in Garama, Klias Peninsula, Sabah, Malaysia”. Journal of Tropical Biology & Conservation (JTBC) 5 (March 23, 2016). Accessed May 18, 2024. https://jurcon.ums.edu.my/ojums/index.php/jtbc/article/view/193.