Ebeinsten, William
Prentice-Hall, 1967
Buku Teks
Corwin, Edward S., author
New York University Press, 1956
Buku Teks
New York Frederick A. Praeger 1962
Buku Teks
Mancall, Mark
Frederick A. Praeger, 1964
Buku Teks
London : History Today
Majalah, Jurnal, Buletin