Kurnialis, Sri, Mahyarni Mahyarni, and Trian Zulhadi. 2023. “The Influence Of Product Quality, Service Quality And Sales Promotion On Increasing Sales According To An Islamic Economic Perspective (Case Study: UMKM Bakery in Bengkalis - Bantan District, Bengkalis Regency)”. Sharing: Journal of Islamic Economics Management and Business 2 (2):169-77. https://doi.org/10.31004/sharing.v2i2.21752.