Siswoyo E. Strengthening Halal Industry in Increasing Competitiveness and Economic Opportunities in Industrial Revolution Era 4.0. Annual International Conference on Islamic Economics and Business (AICIEB) [Internet]. 7Dec.2021 [cited 3Jul.2024];1:67-4. Available from: https://conferences.uinsalatiga.ac.id/index.php/aicieb/article/view/9