Shalihin, A. “Peningkatan Kualitas Layanan Sertifikasi Halal Menggunakan Value Stream Mapping (VSM): IMPROVING THE QUALITY OF HALAL CERTIFICATION SERVICES USING VALUE STREAM MAPPING (VSM))”. Engineering and Technology International Journal 4, no. 01 (March 22, 2022): 45–51. Accessed July 10, 2026. https://www.mand-ycmm.org/index.php/eatij/article/view/186.