Syamsuri, Abd. Rasyid, and Abd. Halim, Ega Siddik. “Improving Employee Performance: Evaluation Analysis of Plantation Company Leaders in North Sumatra”. Migration Letters 21, no. 5 (March 6, 2024): 784–794. Accessed November 24, 2024. https://migrationletters.com/index.php/ml/article/view/9172.