Rand McNally and Company. (1993). Atlas of American history. Houghton Mifflin.
Lua i Stíl Chicago (17ú heag.)Rand McNally and Company. Atlas of American History. Chicago: Houghton Mifflin, 1993.
Lua MLA (8ú heag.)Rand McNally and Company. Atlas of American History. Houghton Mifflin, 1993.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.