HUTAURUK, Friska Juliana; MATONDANG, Rahim; PUJANGKORO, Sugiharto. The Effect of Work Discipline on Employee Productivity. Jurnal Sistem Teknik Industri, [S. l.], v. 24, n. 2, p. 221–227, 2022. DOI: 10.32734/jsti.v24i2.8500. Disponível em: https://talenta.usu.ac.id/jsti/article/view/8500. Acesso em: 16 dec. 2025.