Andreansyah E, Barus FA. Pengaruh Disiplin Kerja dan Status Kerja terhadap Produktivitas Pemanen di PT Perkebunan Nusantara IV Afdeling 3 Kebun Dolok Ilir . RRJ [Internet]. 2026Jun.11 [cited 2026Jun.11];8(4):2129-42. Available from: https://jurnal.ranahresearch.com/index.php/R2J/article/view/2145