Ruswana, Iin. “Pengaruh Pelatihan Terhadap Kualitas Kerja Room Attendant Di Garuda Plaza Hotel And Convention Medan”. Jurnal Online Mahasiswa 1, no. 1 (September 29, 2022): 21–29. Accessed April 23, 2024. http://jom.poltekparmedan.ac.id/index.php/jomph/article/view/23.