Tri Mulyani, C., and S. Sunyoto. “Pengaruh Kualitas Makanan Terhadap Kepuasan Tamu Di Ratu Ratih Caffe Hotel Sahid Jaya Solo”. Jurnal Pariwisata Indonesia, vol. 10, no. 1, Dec. 2014, pp. 66-89, http://jurnal.stpsahidsurakarta.ac.id/index.php/JPI/article/view/187.