Ivan Benedict Tambunan. TINJAUAN TENTANG TUGAS DAN TANGGUNG JAWAB ROOM SERVICE WAITER DI HOTEL JW MARRIOTT MEDAN. JIAA [Internet]. 2023Oct.31 [cited 2024Sep.8];10(2):60-5. Available from: https://journal.akpardarmaagung.ac.id/index.php/JIAA/article/view/136