Yusuf, Asnidar Hanim, Idris Oyewale Oyelakin, Syadiyah Abdul Shukor, and Ummi Salwa Ahmad Bustamam. 2017. “THE ROLE OF HALAL CERTIFICATION IN BUSINESS PERFORMANCE IN SELANGOR: A STUDY ON KOPITIAMS”. Malaysian Management Journal 21 (December):1-22. https://doi.org/10.32890/mmj.21.2017.9052.