Mohamed Idris. (2009). Native non-standard English vs. non-native standard English: An attitude study with particular emphasis on the prestige value. Kulliyyah of Islamic Revealed Knowledge and Human Sciences, International Islamic University Malaysia.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Mohamed Idris. Native Non-standard English Vs. Non-native Standard English: An Attitude Study with Particular Emphasis on the Prestige Value. Gombak, Selangor: Kulliyyah of Islamic Revealed Knowledge and Human Sciences, International Islamic University Malaysia, 2009.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)Mohamed Idris. Native Non-standard English Vs. Non-native Standard English: An Attitude Study with Particular Emphasis on the Prestige Value. Kulliyyah of Islamic Revealed Knowledge and Human Sciences, International Islamic University Malaysia, 2009.