Utami R, Putri EIK, Ekayani M. BIAYA EKSTERNAL DAN INTERNALISASI LIMBAH PABRIK KELAPA SAWIT. JPSL [Internet]. 2018Aug.1 [cited 2024Apr.25];8(2):143-50. Available from: https://jurnal.ipb.ac.id/index.php/jpsl/article/view/16202