NASUTION, Rizal Amhar. The Importance Of Supervisor Supervision On The Performance Of Housekeeping Department Employees At Le Polonia Hotel Medan. Jurnal Online Mahasiswa, [S. l.], v. 1, n. 4, 2023. Disponível em: http://jom.poltekparmedan.ac.id/index.php/jomph/article/view/77. Acesso em: 14 may. 2024.