Winata, Reihan Arya, et al. “Analysis of Tahubudi Product Strategy in Facing Competition Using Porter’s Five Forces and Islamic Perspective”. SERAMBI: Jurnal Ekonomi Manajemen Dan Bisnis Islam, vol. 6, no. 2, July 2024, pp. 87-100, doi:10.36407/serambi.v6i2.1342.