Al-Aِngari, A. I., & Kebbe, M. Z. (2021). The Acquisition of Najdi Phonology by Normal Children and Children with Down Syndrome. Imam Mohammad ibn Saud Islamic University, College of Languages and Translation, Department of English Language and Literature.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Al-Aِngari, Asiah Ibrahim, و Mohammed Ziad Kebbe. The Acquisition of Najdi Phonology by Normal Children and Children with Down Syndrome. Riyadh: Imam Mohammad ibn Saud Islamic University, College of Languages and Translation, Department of English Language and Literature, 2021.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)Al-Aِngari, Asiah Ibrahim, و Mohammed Ziad Kebbe. The Acquisition of Najdi Phonology by Normal Children and Children with Down Syndrome. Imam Mohammad ibn Saud Islamic University, College of Languages and Translation, Department of English Language and Literature, 2021.