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TEORI INSTITUSI: TEKANAN PERSEKITARAN DALAM PENGURUSAN PENSIJILAN HALAL: Institutional Theory: Environmental Pressure in Halal Certification Management. J. Muwafaqat. 2018;1(2):1-21. Accessed July 13, 2026. https://muwafaqat.uis.edu.my/index.php/journal/article/view/53