Maonah, Siti, and Dana Santoso Saroso. “CRITICAL ACTIVITY IDENTIFICATION OF HALAL ASSURANCE SYSTEM FROM FLAVOR PRODUCTION”. Operations Excellence: Journal of Applied Industrial Engineering, vol. 10, no. 2, Sept. 2018, pp. 145-51, https://publikasi.mercubuana.ac.id/index.php/oe/article/view/3839.