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, vol. 4, no. 01, Mar. 2022, pp. 45-51, doi:10.55642/eatij.v4i01.186.