Samrin, S., A. A. Tarigan, and S. Sugianto. “Business Development Strategy through Blue Ocean Strategy in Increasing Product Competitiveness in Gayo Coffee Farming in Aceh: Sharia Business Perspective”. Journal of Economics, Entrepreneurship, Management Business and Accounting, vol. 4, no. 2, Mar. 2026, pp. 189-15, https://journal.diginus.id/JEEMBA/article/view/986.