Hardiyanti, O., & Nurmanina, A. (2020). Analysis of The Utilization of the Social Center for Orangutan Protection (COP) In Kalimantan in Orangutan Saving Efforts: Analisis Pemanfaatan Jaringan Sosial Centre for Orangutan Protection (COP) di Kalimantan Dalam Upaya Penyelamatan Orangutan. Progress In Social Development, 1(1), 9-17. https://doi.org/10.30872/psd.v1i1.14