HAKIM, D. M.; AL MUNAWAR, F. A. Validity of Sale and Purchase Agreement Using Coin Flip System: A Perspective from Indonesian Civil Code and Islamic Commercial Law. Journal of Modern Islamic Studies and Civilization, [S. l.], v. 3, n. 03, p. 340–356, 2025. DOI: 10.59653/jmisc.v3i03.1904. Disponível em: https://risetpress.com/index.php/jmisc/article/view/1904. Acesso em: 3 oct. 2025.