Educational Research Council of America. Social Science Staff. (1975). The American adventure: The early years, 20,000 B.C.-A.D. 1763. Allyn and Bacon.
Lua i Stíl Chicago (17ú heag.)Educational Research Council of America. Social Science Staff. The American Adventure: The Early Years, 20,000 B.C.-A.D. 1763. Boston: Allyn and Bacon, 1975.
Lua MLA (8ú heag.)Educational Research Council of America. Social Science Staff. The American Adventure: The Early Years, 20,000 B.C.-A.D. 1763. Allyn and Bacon, 1975.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.