Boyd, Anne Morris
United states government publications
H.W. Wilson, 1949
 Buku Teks
Walker, Edward Everett, 1900-1974
Government of the United States
Charles Scribner's Sons, 1943
 Buku Teks
Kamerman, Sheila B.
Social services in the United States
Temple University Press, 1976
 Buku Teks
The United States of America : a government by the people
The America University, [date of publication not identified]
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The United States government Internet manual.
MD : Bernan Press, 2004
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