Yap, C. H. (2014). Life cycle assessment tools to quantify and evaluate environmental performance in granite quarrying industry.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Yap, Chin Hoi. Life Cycle Assessment Tools to Quantify and Evaluate Environmental Performance in Granite Quarrying Industry. 2014.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)Yap, Chin Hoi. Life Cycle Assessment Tools to Quantify and Evaluate Environmental Performance in Granite Quarrying Industry. 2014.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.