Gulo, Destin, and Maria Magdalena Bate’e. “Online Community Marketing Strategies for Building Customer Loyalty at UD. Surya in Gunungsitoli City”. Amkop Management Accounting Review 5, no. 2 (October 25, 2025): 1092–1099. Accessed October 11, 2026. https://ojs.vifada.id/index.php/amar/article/view/2966.