Raja, M. ., A. Kurlillah, C. Astina, Z. Zulhilmi, and O. A. Fazal Ahmed. “Self-Declare Halal Certification in Langsa City: Empowering MSMEs for Quality Consumption”. International Journal of Halal Industry, vol. 1, no. 2, Oct. 2025, pp. 117-32, doi:10.20885/IJHI.vol1.iss2.art1.