Nurzida Mohamed Kalam. (2015). Non-native intonation patterns in English tag questions: A study of Malay and Thai speakers of English. Kulliyyah of Islamic Revealed Knowledge and Human Sciences, International Islamic University Malaysia.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Nurzida Mohamed Kalam. Non-native Intonation Patterns in English Tag Questions: A Study of Malay and Thai Speakers of English. Kuala Lumpur: Kulliyyah of Islamic Revealed Knowledge and Human Sciences, International Islamic University Malaysia, 2015.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)Nurzida Mohamed Kalam. Non-native Intonation Patterns in English Tag Questions: A Study of Malay and Thai Speakers of English. Kulliyyah of Islamic Revealed Knowledge and Human Sciences, International Islamic University Malaysia, 2015.