Nor Zalmiah Jahidin. (1999). Covey's principle centered leadership: Its applicability to the leadership and management of Islamic schools in Malaysia. Kulliyyah of Islamic Revealed Knowledge and Human Sciences, International Islamic University Malaysia.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Nor Zalmiah Jahidin. Covey's Principle Centered Leadership: Its Applicability to the Leadership and Management of Islamic Schools in Malaysia. Kuala Lumpur: Kulliyyah of Islamic Revealed Knowledge and Human Sciences, International Islamic University Malaysia, 1999.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)Nor Zalmiah Jahidin. Covey's Principle Centered Leadership: Its Applicability to the Leadership and Management of Islamic Schools in Malaysia. Kulliyyah of Islamic Revealed Knowledge and Human Sciences, International Islamic University Malaysia, 1999.