Hasan U, Zulianto W, Usman O. The Influence of Sustainable Raw Material Availability and Environmentally Friendly Image on Competitive Advantage: The Mediating Role of Product Innovation. GRDIS [Internet]. 2025 Sep. 4 [cited 2026 Apr. 30];5(4):784-96. Available from: https://goldenratio.id/index.php/grdis/article/view/1386