Saepudin, et Al, Saepudin. “Product Quality Innovation and Service Quality in Relationship With Consumer Purchasing Decisions for Coconut Shell Charcoal at UMKM Mitra Jaya Bandung Regency, West Java”. Adpebi Science Series 1, no. 1 (January 12, 2024). Accessed June 22, 2025. http://adpebipublishing.com/index.php/icemat/article/view/356.