Trianto, Manap, et al. “Public Perception on the Existence of Macaca Hecki and Macaca Tonkeana in Protected Forest and Pangi Binangga Nature Reserve of Central Sulawesi”. Jurnal Biologi Tropis, vol. 21, no. 2, July 2021, pp. 534-42, doi:10.29303/jbt.v21i2.2769.