BUANG, A. H. KEBEBASAN BERKONTRAK DI DALAM UNDANG-UNDANG ISLAM. Jurnal Syariah, [S. l.], v. 1, n. 2, p. 243–268, 1993. Disponível em: https://jpmm.um.edu.my/index.php/JS/article/view/28370. Acesso em: 16 may. 2025.