Wong, N. S. (1997). A quantitative study of the performance of building contracts with special reference to school projects in Singapore.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Wong, Nam Sin. A Quantitative Study of the Performance of Building Contracts with Special Reference to School Projects in Singapore. 1997.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)Wong, Nam Sin. A Quantitative Study of the Performance of Building Contracts with Special Reference to School Projects in Singapore. 1997.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.