Rawlinson, H.G.
A concise history of the Indian people
Oxford University Press, 1950
 Buku Referensi
Rawlinson, H.G.
A concise history of the Indian people
Oxford University Press, 1958
 Buku Teks SO
Concise dictionary of American history
edited by Thomas C. Cochran and Wayne Andrew
Charles Scribner`s Sons, 1962
 Buku Referensi
Graebner, Norman A.
A history of the American people
McGraw-Hill, 1975
 Buku Teks SO
Bailey, Thomas Andrew, 1902-1983
A diplomatic history of the American people
Prentice-Hall, 1980
 Buku Teks SO