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.
Trích dẫn kiểu Chicago (xuất bản lần thứ 7)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.
Trích dẫn kiểu MLA (xuất bản lần thứ 8)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.
Cảnh báo: Các trích dẫn này có thể không phải lúc nào cũng chính xác 100%.