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Supriyanto, Slamet and Hendriyati, Lutfi (2021) Analisa Pengaruh SOP (Standard Operating Procedure) Terhadap Kinerja Waiter dan Waitress di In Bloom Restoran Hotel Ayaartta Malioboro Yogyakarta Indonesia. Journal of Tourism and Economic, 4 (1). pp. 73-84. ISSN 2622-4631