Silvia Maristy H, Yasmin Syifanisena A-N. UPAYA TELEPHONE OPERATOR DALAM MENINGKATKAN KUALITAS PELAYANAN DI JAMBULUWUK MALIOBORO HOTEL YOGYAKARTA . NUSANTARA [Internet]. 2020 Feb. 25 [cited 2024 Oct. 18];3(1):13-22. Available from: https://jurnal.akparda.ac.id/index.php/nusantara/article/view/14