Ong, P. P. (2003). The relationship between academic achievement and discipline problems of a selected school in Selangor.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Ong, Pe Pe. The Relationship Between Academic Achievement and Discipline Problems of a Selected School in Selangor. 2003.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)Ong, Pe Pe. The Relationship Between Academic Achievement and Discipline Problems of a Selected School in Selangor. 2003.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.