Hofstadter, R., & Ver Steeg, C. L. (1969). Great issues in American history. Vintage Books.
Lua i Stíl Chicago (17ú heag.)Hofstadter, Richard, agus Clarence Lester Ver Steeg. Great Issues in American History. New York: Vintage Books, 1969.
Lua MLA (9ú heag.)Hofstadter, Richard, agus Clarence Lester Ver Steeg. Great Issues in American History. Vintage Books, 1969.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.