Syed Hamzah, S. A., S. . Johari, Y. A. Yusof, M. A. . Ramlan, and A. S. Jais. “From Application to Certification: Identifying Bottlenecks and Best Practices in the Halal Industry: A Case Study of Four Hotels in Klang Valley, Malaysia”. Journal of Halal Industry & Services, vol. 9, no. 1, Sept. 2026, doi:10.36877/jhis.a0000645.