Anjani Intan, Ikhah Malikhah, and Muhammad Toyib Daulay. “ANALYSIS OF WORK ENVIRONMENT, WORK DISCIPLINE AND COMPETENCIES ON EMPLOYEE PERFORMANCE AT PT. PERKEBUNAN NUSANTARA IV REGIONAL I MEDAN”. International Journal of Social Science, Educational, Economics, Agriculture Research and Technology (IJSET) 3, no. 8 (July 31, 2024): 1254–1267. Accessed April 20, 2026. https://www.ijset.org/index.php/ijset/article/view/503.