Patrick, John
History of the American Nation
Macmillan Publishing Company, 1984
 Buku Teks SO
Quint, Howard H
Main problems in American history
Dorsey Press, 1968
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Commager, Henry Steele, selector
The American mind
Yale University Press, 1950
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Geography and the American environment / Edited by Saul B. Cohen
Voice of America Forum Lectures , 1968
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Barnes, Harry Elmer
The American way of life : an introduction to the study of contemporary society
Prentice-Hall, 1950
 Buku Teks SO