Yulistyari, Eka Indah, Chotibul Umam, and M. Reiza Fachrozy. 2019. “Analisis Kualitas Pelayanan Bus Pariwisata Dengan Metode Service Quality Dan Importance Performance Analysis”. Operations Excellence: Journal of Applied Industrial Engineering 11 (2). Jakarta, Indonesia:144-52. https://doi.org/10.22441/oe.v11.2.2019.024.