Sabinus, S., 		Yurisinthae, E., & 		Oktoriana, S.
2021 Jul 31.  IMPLEMENTASI SERTIFIKASI INDONESIAN SUSTAINABLE PALM OIL SYSTEM (ISPO) PADA PETANI KELAPA SAWIT SWADAYA  DI KABUPATEN SANGGAU. JSEP (Journal of Social and Agricultural Economics). [Online] 14:2