The constitution of the United States of America
United States Information Agency, 1987
 Buku Teks
The Pharmacopeia of the United States of America
Board of Trusless, 1960
 Buku Referensi
Whitaker,Arthur P.
The United States and South America the NorthernRepublics
Harvard University Press, 1948
 Buku Teks
The United States of America : a government by the people
The America University, [date of publication not identified]
 Buku Teks
Bemis, Samuel Flagg, 1891-1973, author
The Latin American policy of the United States, an historical interpretation
Harcourt, Brace, 1943
 Buku Teks
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