Columbia University. Teachers College. Citizenship Education Project. (1955). When men are free: Premises of American liberty. Published for Teachers College, Columbia University [by] Houghton Mifflin.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Columbia University. Teachers College. Citizenship Education Project. When Men Are Free: Premises of American Liberty. Boston: Published for Teachers College, Columbia University [by] Houghton Mifflin, 1955.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)Columbia University. Teachers College. Citizenship Education Project. When Men Are Free: Premises of American Liberty. Published for Teachers College, Columbia University [by] Houghton Mifflin, 1955.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.