Hacker, Louis M., author
Appleton-Century-Crofts, 1949
Buku Teks
Krout, John A., author
Barnes & Noble, 1962
Buku Teks
Kahin, George McTurnan, author
Dial Press , 1967
Buku Teks
Dean, Vera Micheles, author
Harvard University Press, 1948
Buku Teks
Farrand, Max, author
Yale University Press, 1962
Buku Teks