Simatupang, Ghana, Novelita Mondamina, and Listiana Oktavia. “Effect Calcium Carbonat (CaCO3) Addition on Free Fatty Acid Content of Restored Palm Oil Fruit”. Jurnal Penelitian Kelapa Sawit 29, no. 2 (August 23, 2021): 63-72. Accessed September 21, 2024. http://jurnalkelapasawit.iopri.org/index.php/jpks/article/view/127.