MUSHARRAF ERSAN, Ahmed; AL-QAISI, Ayman Saud muttub. Grammar of letters and tools. Al-Adab Journal, Baghdad, Iraq, n. 134, p. 17–36, 2020. DOI: 10.31973/aj.v0i134.1052. Disponível em: https://aladabj.uobaghdad.edu.iq/index.php/aladabjournal/article/view/1052.. Acesso em: 8 apr. 2025.