Santosa, Yanto, and Dede Aulia Rahman. “Precision of Nest Method in Estimating Orangutan Population and Determination of Important Ecological Factors for Management of Conservation Forest”. Jurnal Manajemen Hutan Tropika 18, no. 1 (April 4, 2012): 39–51. Accessed January 12, 2026. https://journal.ipb.ac.id/jmht/article/view/4743.