Al Haidari, M. A., & Rifaat, K. (2015). Phonological development in six to ten year old najdi children with down syndrome \. Imam Mohammed Bin Saud Islamic University,College Languages and Translation, Department of English Language and Literature.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Al Haidari, Muneera Abdullah, و Khaled Rifaat. Phonological Development in Six to Ten Year Old Najdi Children with Down Syndrome \. Riyadh: Imam Mohammed Bin Saud Islamic University,College Languages and Translation, Department of English Language and Literature, 2015.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)Al Haidari, Muneera Abdullah, و Khaled Rifaat. Phonological Development in Six to Ten Year Old Najdi Children with Down Syndrome \. Imam Mohammed Bin Saud Islamic University,College Languages and Translation, Department of English Language and Literature, 2015.