Wong, C. S. (1999). Strategy for the marketing and management of professional consultancy services in Singapore: In search of a business plan for the next millennium.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Wong, Chun Seng. Strategy for the Marketing and Management of Professional Consultancy Services in Singapore: In Search of a Business Plan for the Next Millennium. 1999.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)Wong, Chun Seng. Strategy for the Marketing and Management of Professional Consultancy Services in Singapore: In Search of a Business Plan for the Next Millennium. 1999.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.