“Analysis of the Determinants of Oil Palm Harvest Workers’ Productivity Using Multiple Linear Regression: A Case Study of PTPN IV Regional 1, Bangun Estate”. Jurnal Sosial Ekonomi Pertanian 22, no. 1 (Juni 7, 2026): 93–101. Diakses Oktober 10, 2026. https://journal.unhas.ac.id/index.php/jsep/article/view/52102.