Antieau, Chester James, author
Commentaries on the constitution of the United States
Dennis & Co., 1960
 Buku Teks
Beard, Charles A., author
An economic interpretation of the constitution of the United Stated
Free Press, 1986
 Buku Teks
Education in the United States of America
Washington U.S. Department of Health, Education, and Welfare 1955
 Buku Teks
Risjord, Norman K., author
America a history of the United States
Prentice-Hall, 1985
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America : a celebration of the United States
Rand McNally and Company.
Rand Mcnally & Company, 2006
 Buku Teks
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