Winata RA, Syafina L, Harahap MI. Analysis of Tahubudi product strategy in facing competition using Porter’s five forces and Islamic perspective. SERAMBI [Internet]. 2024 Jul. 6 [cited 2026 Jun. 10];6(2):87-100. Available from: https://ejournal.imperiuminstitute.org/index.php/SERAMBI/article/view/1342