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Riawan A, Endaryanti D. PENANGANAN RESERVASI KAMAR OLEH TELEPON OPERATOR DALAM OPERASIONAL FRONT OFFICE HOTEL GRAND TJOKRO YOGYAKARTA. mb [Internet]. 2024 May 31 [cited 2026 Jun. 10];5(1):1-12. Available from: https://ejournal.mandalabhakti.ac.id/mabha/article/view/72