Wong, W. C. (1999). Creating sustainable competitive advantages in a global environment: A survey of Malaysian advertising agencies.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Wong, Wai Cheng. Creating Sustainable Competitive Advantages in a Global Environment: A Survey of Malaysian Advertising Agencies. 1999.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)Wong, Wai Cheng. Creating Sustainable Competitive Advantages in a Global Environment: A Survey of Malaysian Advertising Agencies. 1999.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.