Kurnialis, Sri, Mahyarni Mahyarni, and Trian Zulhadi. “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, no. 2 (December 31, 2023): 169–177. Accessed November 21, 2024. http://journal.universitaspahlawan.ac.id/index.php/sharing/article/view/21752.