Hendry, Hendry, Faudunasokhi Telaumbanua, Wilson Wilson, Liyanti Liyanti, and Walker Lee. “Effect of Competence, Discipline, and Work Stress on Employee Performance at PT Vayata Senada Cemerlang”. Journal of Economics and Business Letters 3, no. 4 (August 19, 2023): 22–28. Accessed July 26, 2025. https://journal.privietlab.org/index.php/JEBL/article/view/233.