Winda Rosita Dewi and Sylvia Balfas (2022) “STRATEGI MARKETING GRAND PURI SARON BOUTIQUE HOTEL YOGYAKARTA DALAM MEMPERTAHANKAN HUNIAN KAMAR DI MASA PANDEMI COVID-19”, JURNAL NUSANTARA, 5(2), pp. 41–54. doi: 10.63986/nsn.v5i2.31.