rizal, said. “ANALISIS PENDAPATAN USAHATANI KELAPA SAWIT KECAMATAN PADANG TUALANG”. Agriprimatech 2, no. 2 (December 20, 2019): 41–45. Accessed April 2, 2026. http://139.162.50.187/index.php/Agriprimatech/article/view/780.