Dull, Jonathan R
Yale University Press, 1985
Buku Teks
edited by Bruce Catton
American Heritage, 1958
Buku Teks
Gagey, Edmond M.
Columbia University Press, 1948
Buku Teks
edited by Jack P. Greene, J.R. Pole
Blackwell , 1994
Buku Referensi
edited by Edmund S. Morgan
Prentice-Hall, 1965
Buku Teks