PasethaA., FarajallahD. P., and Gholib. “Perilaku Harian Monyet Hitam Sulawesi (Macaca Nigra) Pada Masa Kebuntingan Di Cagar Alam Tangkoko-Batuangus, Sulawesi Utara: Behavior of Crested Macaque ( Macaca Nigra ) During Pregnancy at Tangkoko-Batuangus Nature Reserve, North Sulawesi”. Jurnal Sumberdaya Hayati, Vol. 5, no. 1, June 2019, pp. 25-34, doi:10.29244/jsdh.5.1.25-34.