Commonwealth Foundation (British Commonwealth). (1971). The Role of the professions in a changing world: Report on a conference held at the Professional Centre of Singapore, October 1971. Commonwealth Foundation.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Commonwealth Foundation (British Commonwealth). The Role of the Professions in a Changing World: Report on a Conference Held at the Professional Centre of Singapore, October 1971. London: Commonwealth Foundation, 1971.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)Commonwealth Foundation (British Commonwealth). The Role of the Professions in a Changing World: Report on a Conference Held at the Professional Centre of Singapore, October 1971. Commonwealth Foundation, 1971.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.