Andrean, R. and Adinugraha, H. H. (2021) “Competency Problems of Halal Slappers In Indonesia: A Literature Study”, Al - Muamalat: Jurnal Hukum dan Ekonomi Syariah, 6(1), pp. 1 - 13. Available at: https://journal.iainlangsa.ac.id/index.php/muamalat/article/view/3525 (Accessed: 6July2025).