Yosi Septrix Sipayung, et al. “Analisis Tingkat Kepuasan Wisatawan Terhadap Pelayanan Pemandu Wisata Di PT. Pacto Tour Travel and Mice Medan”. TOBA: Journal of Tourism, Hospitality, and Destination, vol. 1, no. 4, Nov. 2022, pp. 178-83, doi:10.55123/toba.v1i4.1684.