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
Rawlinson, H.G.
A concise history of the Indian people
Oxford University Press, 1958
 Buku Teks SO
Concise dictionary of American history
editor Thomas C. Cochran, Wayne Andrew
Charles Scribner's Sons , 1962
 Buku Referensi
Graebner, Norman A.
A history of the American people
McGraw-Hill, 1975
 Buku Teks