Kamal, Andi Nuralim, and Retno Kusumastuti. “Culinary Satisfaction in Jakarta’s Old Town: The Roles of Product Quality and Administrative Service Innovation”. International Journal of Economics Development Research (IJEDR) 4, no. 3 (May 17, 2023): 1259–1272. Accessed July 4, 2025. https://yrpipku.com/journal/index.php/ijedr/article/view/3842.