Dull, Jonathan R
Yale University Press, 1985
Buku Teks
Graebner, Norman A.
McGraw-Hill, 1975
Buku Teks
Brinkley, Alan
McGraw-Hill, 1997
Buku Referensi
Aptheker, Herbert
International Publishers, 1959
Buku Teks
Thistlethwaite, Frank
Cambridge University Press, 1955
Buku Teks