(1949). The world at work: The economic and social efforts of the United Nations and the specialized agencies. Chicago: Rotary International.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)The World at Work: The Economic and Social Efforts of the United Nations and the Specialized Agencies. Chicago: Rotary International, 1949.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)The World at Work: The Economic and Social Efforts of the United Nations and the Specialized Agencies. Chicago: Rotary International, 1949.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.