Andrianto, Mokhamad Syaefudin. “Preliminary Product Acceptance and Initial Price of Virgin Red Palm Oil on African Expatriate Communnity in Jakarta”. International Journal of Oil Palm 2, no. 2 (May 30, 2019): 87–93. Accessed November 26, 2025. https://ijop.id/index.php/ijop/article/view/27.