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.
Lua i Stíl Chicago (17ú heag.)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.
Lua MLA (8ú heag.)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.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.