Noor Alhusna binti Madzlan. (2011). Perception of the attitudinal functions of intonation in responding to yes / no questions: A study of selected Celpad english teachers. Kulliyyah of Islamic Revealed Knowledge and Human Sciences, International Islamic University Malaysia.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Noor Alhusna binti Madzlan. Perception of the Attitudinal Functions of Intonation in Responding to Yes / No Questions: A Study of Selected Celpad English Teachers. Gombak, Selangor: Kulliyyah of Islamic Revealed Knowledge and Human Sciences, International Islamic University Malaysia, 2011.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)Noor Alhusna binti Madzlan. Perception of the Attitudinal Functions of Intonation in Responding to Yes / No Questions: A Study of Selected Celpad English Teachers. Kulliyyah of Islamic Revealed Knowledge and Human Sciences, International Islamic University Malaysia, 2011.