Yudha, A. T. R. C., N. S. Pauzi, and R. binti Mohd Azli. “The Synergy Model for Strengthening the Productivity of Indonesian Halal Industry”. Al-Uqud : Journal of Islamic Economics, vol. 4, no. 2, Apr. 2020, pp. 186-99, doi:10.26740/al-uqud.v4n2.p186-199.