MENDROPA, K. A. Effect of Work Motivation and Discipline on Employee Performance of PT. Pos Indonesia Lubuk Pakam. Journal of Management Science (JMAS), [S. l.], v. 1, n. 4, Oktober, p. 93–97, 2018. Disponível em: https://www.exsys.iocspublisher.org/index.php/JMAS/article/view/17. Acesso em: 26 jul. 2026.