Hasudungan Siregar, Yusniar Lubis, & Syahbudin. (2023). THE EFFECT OF ISPO IMPLEMENTATION ON PALM OIL FARMERS’ INCOME IN BANDAR PASIR MANDOGE, ASAHAN DISTRICT. International Journal of Social Science, Educational, Economics, Agriculture Research and Technology (IJSET), 2(8), 427–436. https://doi.org/10.54443/ijset.v2i8.197