Centre for Development of Teaching and Learning at NUS. (2002). The effective student: A guide to higher education at nus (Ninth edition.). CDTL at National University of Singapore.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Centre for Development of Teaching and Learning at NUS. The Effective Student: A Guide to Higher Education at Nus. Ninth edition. Singapore: CDTL at National University of Singapore, 2002.
توثيق جمعية اللغة المعاصرة MLA (الإصدار التاسع)Centre for Development of Teaching and Learning at NUS. The Effective Student: A Guide to Higher Education at Nus. Ninth edition. CDTL at National University of Singapore, 2002.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.