Nee, J. A. T. P. C. (1997). Teachers' perceptions of principals' leadership styles and students' academic achievement of selected secondary schools in the Gombak District. International Islamic University Malaysia.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Nee, Julie Abdullah Tan Phaik Choo. Teachers' Perceptions of Principals' Leadership Styles and Students' Academic Achievement of Selected Secondary Schools in the Gombak District. Petaling Jaya: International Islamic University Malaysia, 1997.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)Nee, Julie Abdullah Tan Phaik Choo. Teachers' Perceptions of Principals' Leadership Styles and Students' Academic Achievement of Selected Secondary Schools in the Gombak District. International Islamic University Malaysia, 1997.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.