Mohd Helmi Bin Mohd Sobri. (2010). The Victorian mood in the tropics: A socio-cultural analysis of the practice and position of science in British Malaya, 1877-1990. Kulliyyah of Islamic Revealed Knowledge and Human Sciences, International Islamic University Malaysia.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Mohd Helmi Bin Mohd Sobri. The Victorian Mood in the Tropics: A Socio-cultural Analysis of the Practice and Position of Science in British Malaya, 1877-1990. Kuala Lumpur: Kulliyyah of Islamic Revealed Knowledge and Human Sciences, International Islamic University Malaysia, 2010.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)Mohd Helmi Bin Mohd Sobri. The Victorian Mood in the Tropics: A Socio-cultural Analysis of the Practice and Position of Science in British Malaya, 1877-1990. Kulliyyah of Islamic Revealed Knowledge and Human Sciences, International Islamic University Malaysia, 2010.