Yuli Eni, Christy Agustina, Metta Merlinna, Risya Bella, Lim Sanny. “The Factors Affecting Efficiency of Palm Kernel in Indonesia Palm Oil Industry”. International Journal of Advanced Science and Technology 29, no. 04 (June 6, 2020): 4463 - 4472. Accessed May 3, 2024. http://sersc.org/journals/index.php/IJAST/article/view/24850.