Dixson, R. J. (1959). The USA: How the country grew with some highlights on its history : an elementary reader. Regents Publishing Co.
Lua i Stíl Chicago (17ú heag.)Dixson, Robert J. The USA: How the Country Grew with Some Highlights on Its History : An Elementary Reader. New York: Regents Publishing Co, 1959.
Lua MLA (9ú heag.)Dixson, Robert J. The USA: How the Country Grew with Some Highlights on Its History : An Elementary Reader. Regents Publishing Co, 1959.
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