United Nation's Educational, Scientific and Cultural Organization. (1971). Scientists abroad: A study of the international movement of persons in science and technology. United Nations Educational Scientific and Cultural Organization.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)United Nation's Educational, Scientific and Cultural Organization. Scientists Abroad: A Study of the International Movement of Persons in Science and Technology. Paris: United Nations Educational Scientific and Cultural Organization, 1971.
توثيق جمعية اللغة المعاصرة MLA (الإصدار التاسع)United Nation's Educational, Scientific and Cultural Organization. Scientists Abroad: A Study of the International Movement of Persons in Science and Technology. United Nations Educational Scientific and Cultural Organization, 1971.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.