Wulandari, Ayu, and Muhammad Ansori Nasution. 2021. “Comparison of Roundtable On Sustainable Palm Oil (RSPO), Indonesian Sustainable Palm Oil (ISPO), and Malaysian Sustainable Palm Oil (MSPO)”. Jurnal Penelitian Kelapa Sawit 29 (1), 35-48. https://doi.org/10.22302/iopri.jur.jpks.v29i1.129.