Arif, Muhammad, Mustapa Khamal Rokan, and Rahima Kumala. 2023. “Quadruple Helix Model in the Development of Halal Micro Business in North Sumatra”. Share: Jurnal Ekonomi Dan Keuangan Islam 12 (1): 201-24. https://doi.org/10.22373/share.v0i0.15628.