Singapore Professional Centre & Fong, C. Y. (1977). The role of professionals in society: Proceedings of the third convention of the Singapore Professional Centre, November 25 - 27, 1977. The Centre.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Singapore Professional Centre و Chan Yoon Fong. The Role of Professionals in Society: Proceedings of the Third Convention of the Singapore Professional Centre, November 25 - 27, 1977. Singapore: The Centre, 1977.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)Singapore Professional Centre و Chan Yoon Fong. The Role of Professionals in Society: Proceedings of the Third Convention of the Singapore Professional Centre, November 25 - 27, 1977. The Centre, 1977.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.