Denny, A., Dalimunthe, F., & Wiharjokusumo, P. (2022). Pengaruh Penerapan Cleanliness, Health, Safety, dan Environmental sustainability terhadap Kepuasan Tamu di Hotel Harper Wahid Hasyim Medan. JURNAL PROINTEGRITA, 6(3), 112 - 126. doi:10.46930/jurnalprointegrita.v6i3.2432