Kurniawan, Rofiq, and Agustinus Hariadi. “Improving the Performance of Oil Palm NPK Fertilization Using Risk Management and Analytic Hierarchy Process”. Journal of Economics, Management, Entrepreneurship, and Business 2, no. 2 (November 30, 2022): 107–126. Accessed June 8, 2026. https://abnus.co/index.php/jemeb/article/view/85.