LINA, L.; PARHUSIP, H. P.; GEA, E. L. D. .; PURWATI, A. A. Pengaruh Disiplin Kerja Dan Motivasi Terhadap Produktivitas Kerja Karyawan Sippin Medan. Management Studies and Entrepreneurship Journal (MSEJ), [S. l.], v. 4, n. 4, p. 4509–4516, 2023. DOI: 10.37385/msej.v4i5.2671. Disponível em: https://www.yrpipku.com/journal/index.php/msej/article/view/2671. Acesso em: 6 jul. 2025.