“EMPLOYMENT FOR OIL PALM PLANTATION COMPANIES IN THE VILLAGE OF MANGKA, BAKAM SUB-DISTRICT, BANGKA REGENCY”. Journal of Integrated Agribusiness 2, no. 2 (December 31, 2020): 106–121. Accessed October 9, 2025. https://journal.ubb.ac.id/index.php/jia/article/view/1519.