Ng, S. L. (2001). A study of journal overlaps, duplicates and costs in the field of computer science held in selected Malaysian University Libraries.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Ng, Siew Ling. A Study of Journal Overlaps, Duplicates and Costs in the Field of Computer Science Held in Selected Malaysian University Libraries. 2001.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)Ng, Siew Ling. A Study of Journal Overlaps, Duplicates and Costs in the Field of Computer Science Held in Selected Malaysian University Libraries. 2001.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.