Crawford, William R.
A century of Latin-American thought
Frederick A. Praeger, 1961
 Buku Teks
Cohen, Morris R.
American thought : a critical sketch
Free Press, 1954
 Buku Teks SO
Gettell, Raymond G.
History of American political thought
Appleton-Century-Crofts, 1928
 Buku Teks
Growth of ideas knowledge thought imagination
Responsive Environments Corporation , 1968
 Buku Teks
Commager, Henry Steele, selector
The American mind : an interpretation of American thought and character the 1880's
Yale University Press, 1950
 Buku Teks SO