Rachman A, Ulpah M, Sangare B. Constructing a Pesantren halal hub model based on the Penta Helix framework for developing the halal economy in Indonesia. Indones. J. Islam. Econ. Res. [Internet]. 2026 Apr. 27 [cited 2026 Sep. 3];8(1):54-68. Available from: https://ejournal.uinsalatiga.ac.id/index.php/ijier/article/view/6623