Mohamad, Ab. Halim. “PENGGUNAAN VOKAL ALIF PADA SUKU KATA TERTUTUP DALAM SISTEM TULISAN JAWI: THE USE OF VOWEL ALIF IN A CLOSED SYLLABLE IN JAWI WRITING SYSTEM”. JURNAL AL-ANWAR, June 2019, pp. 65-78, https://jurnalanwar.com/index.php/ojs/article/view/84.