Rostow, Walt Whitman, author
John Wiley & Sons, 1955
Buku Teks
Barnett, A. Doak (Arthur Doak), author
Frederick A. Praeger, 1962
Buku Teks
Lewis, John W., author
Cornell University Press, 1963
Buku Teks
Hinton, Harold C., author
Houghton Miffiln, 1966
Buku Teks
Buck, John Lossing, 1890-1975, author
Frederick A. Praeger , 1966
Buku Teks