Hidayati, Juliza, and Sawarni Hasibuan. “Value Chain Analysis and Value Added Enhancement of Indonesia Crude Palm Oil Supply Chain”. International Journal on Advanced Science, Engineering and Information Technology 9, no. 2 (March 12, 2019): 397–404. Accessed July 3, 2024. https://ijaseit.insightsociety.org/index.php/ijaseit/article/view/7708.