Laura Aviana Christie, Cindy Citya Dima. Telephone Operator Service Communication (Front Office) with Major Departments Regarding Guest Requests at Gumaya Tower Hotel Semarang. ijellacush [Internet]. 2023 Aug. 23 [cited 2024 Nov. 22];1(3):31-5. Available from: https://pbsi-upr.id/index.php/ijellacush/article/view/302