Barnett, Arthur Doak
Frederick A. Praeger, 1962
Buku Teks
Lewis, John W.
Cornell University Press, 1963
Buku Teks
Hinton, Harold C.
Houghton Miffiln, 1966
Buku Teks
Buck, John Lossing, 1890-1975
Frederick A. Praeger , 1966
Buku Teks
Goldman, Merle
Harvard University Press, 1967
Buku Teks