Hussein, H. K. (2014). An analysis of al-Khwarizmi's contribution to mathematical sciences with a specific reference to algebraic science. International Institute of Islamic Thought and Civilization, International Islamic University Malaysia.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Hussein, Hassnaa Kamal. An Analysis of Al-Khwarizmi's Contribution to Mathematical Sciences with a Specific Reference to Algebraic Science. Kuala Lumpur: International Institute of Islamic Thought and Civilization, International Islamic University Malaysia, 2014.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)Hussein, Hassnaa Kamal. An Analysis of Al-Khwarizmi's Contribution to Mathematical Sciences with a Specific Reference to Algebraic Science. International Institute of Islamic Thought and Civilization, International Islamic University Malaysia, 2014.