Supriyanto, Sarwani, Andry Herawati, and Mochammad Arfani. 2025. “Marketing Marketing Optimization of Sambel Pecel Niki Eco Madiun in the Digital Era: A Study of the Transition from Offline to Online Sales”. International Journal of Business and Quality Research 3 (04), 317-32. https://doi.org/10.63922/ijbqr.v3i04.2650.