Wulandari, Rosanna, Arissetyanto Nugroho, and Derriawan Derriawan. 2025. “Supporting Factors of Digital Marketing and Customer Relationship Management and Their Role in Developing the Champion UMKM Model in West Java: Literature Review”. Quantitative Economics and Management Studies 6 (2):283-92. https://doi.org/10.35877/454RI.qems3951.