Frost, J. (1848). A history of the United States: For the use of schools and academies (New ed., rev. and continued to the present time.). Thomas Cowperthwait & Co..
Lua i Stíl Chicago (17ú heag.)Frost, John. A History of the United States: For the Use of Schools and Academies. New ed., rev. and continued to the present time. Philadelphia: Thomas Cowperthwait & Co., 1848.
Lua MLA (8ú heag.)Frost, John. A History of the United States: For the Use of Schools and Academies. New ed., rev. and continued to the present time. Thomas Cowperthwait & Co., 1848.
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