Vogel, Ezra F.
Japan as number one lessons for America
Harvard University Press, 1979
 Buku Teks
Rossiter, Clinton, 1917-1970
Conservatism in America
Alfred A. Knopf, 1956
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Booth, John A.
Understanding central America
Westerview Press, 1989
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Booth, John A.
Understanding central America
Westerview Press, 1993
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Domhoff, G. William
Who rules America?: challenges to corporate and class dominance
McGraw-Hill, Higher Education, 2010
 Buku Teks SO