Alkhalidy, N. K., & Refaat, K. M. (2012). Assimilation in Modern Standard Arabic and Najdi Dialect. Imam Mohammad ibn Saud Islamic University, College of Languages and Translation, Department of English Language and Literature.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Alkhalidy, Nourah Khaled, و Khalid Muhammad Refaat. Assimilation in Modern Standard Arabic and Najdi Dialect. Riyadh: Imam Mohammad ibn Saud Islamic University, College of Languages and Translation, Department of English Language and Literature, 2012.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)Alkhalidy, Nourah Khaled, و Khalid Muhammad Refaat. Assimilation in Modern Standard Arabic and Najdi Dialect. Imam Mohammad ibn Saud Islamic University, College of Languages and Translation, Department of English Language and Literature, 2012.