Aditya Yuwana Nawing, and Emmanuel Aries Widyarto. “PENERAPAN STANDARD OPERATIONAL PROCEDURE OLEH ROOM ATTENDANT DALAM MENJAGA HYGIENE DAN SANITASI KAMAR DI HOTEL INDAH PALACE YOGYAKARTA DI MASA PANDEMI COVID-19”. JURNAL NUSANTARA, vol. 5, no. 2, Sept. 2022, pp. 31-40, https://jurnal.akparda.ac.id/index.php/nusantara/article/view/30.