Indriani, Tamara, Nugrahani Astuti, Mein Kharnolis, and Mauren Gita Miranti. 2023. “ Kepuasan Pelanggan Pada Kualitas Produk Sop Bang Oya Di PKL Kedungdoro Surabaya”. Innovative: Journal Of Social Science Research 3 (3):3933-45. http://j-innovative.org/index.php/Innovative/article/view/2563.