Cheng, K. J. (1997). The level of managerial environmental awareness on industrial pollution among manufacturing industries in Peninsula Malaysia, and their respective waste management policies.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Cheng, Kwang Joo. The Level of Managerial Environmental Awareness on Industrial Pollution Among Manufacturing Industries in Peninsula Malaysia, and Their Respective Waste Management Policies. 1997.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)Cheng, Kwang Joo. The Level of Managerial Environmental Awareness on Industrial Pollution Among Manufacturing Industries in Peninsula Malaysia, and Their Respective Waste Management Policies. 1997.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.