THE ROLE OF HALAL CERTIFICATION IN BUSINESS PERFORMANCE IN SELANGOR: A STUDY ON KOPITIAMS. Malaysian Management Journal, [S. l.], v. 21, p. 1–22, 2017. DOI: 10.32890/mmj.21.2017.9052. Disponível em: https://www.educationmalaysia.co.uk/index.php/mmj/article/view/mmj.21.2017.9052. Acesso em: 10 nov. 2025.