Supriyanto, Sarwani, Andry Herawati, and Mochammad Arfani. “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, Vol. 3, no. 04, Dec. 2025, pp. 317-32, doi:10.63922/ijbqr.v3i04.2650.