edited by Bruce Catton
American Heritage, 1958
Buku Teks
Gagey, Edmond M., author
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
Baur, John I.H. (John Ireland Howe), 1909-1987, author
Harvard University Press, 1951
Buku Teks