Iskandar, Entang, Randall C Kyes, Rondang Siregar, and R.P Agus Lelana. “Group Formation of the Long-Tailed Macaques Introduced onto Tinjil Island, West Java”. Media Konservasi 5, no. 1 (January 18, 2011). Accessed December 25, 2025. https://journal.ipb.ac.id/konservasi/article/view/2784.