American revolution : two centuries / edited by Edmund S. Morgan
Prentice-Hall, 1965.
Buku Teks
King, Francis, 1923-2011
Edward Morgan Forster : with 122 illustrations
Thames & Hudson, 1988
Buku Teks
Kraemer, Richard H.
Essentials of texas politics/ Richard H. Kraemer and Charldean Newell.
West Pub. Co, 1989
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Commentary on the refugee convention 1951: article 2-11, 13-37
UNHCR, 1997
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Brewster, Lawrence G.
A primer of california politics
Thomson Wadsworth, 2004
Buku Teks SO