hanifah, karimah, Rima Azara, and Syahrifa Nurbaya. 2026. “Implementation of Halal Certification at the Canteen of SMA Muhammadiyah 2 (SMAMDA) Sidoarjo: Penerapan Sertifikasi Halal Di Kantin SMA Muhammadiyah 2 (SMAMDA) Sidoarjo”. Procedia of Engineering and Life Science 10 (1):281-86. https://doi.org/10.21070/pels.v10i1.3028.