WAN ABDULLAH, W. S. Gerd R. Puin, Observations on Early Qur’an Manuscripts in Sana’a’, (5 Hlm.) Dalam Stefan Wild, (Ed.) The Qur’an as Text, (Leiden - New York - Koln: E.J. Brill, 1996). Jurnal Usuluddin, [S. l.], v. 13, p. 153–156, 2001. Disponível em: https://ejournal.um.edu.my/index.php/JUD/article/view/4019. Acesso em: 1 may. 2024.