Atmoko, T. ., A. . Mardiastuti, and E. Iskandar. “Behavior and Group Movement of Proboscis Monkey’s (Nasalis Larvatus Wurmb.Wurmb.) in Samboja, East Kalimantan”. Jurnal Penelitian Kehutanan Wallacea, vol. 6, no. 2, Aug. 2017, pp. 169-7, doi:10.18330/jwallacea.2017.vol6iss2pp169-179.