Fischer, Louis, author
Princeton University Press, 1951
Buku Teks
Fischer, George, author
Harvard University Press, 1952
Buku Teks
Miller, Wright
E.P. Dutton, 1961
Buku Teks
Daniels, Robert V
Westview Press, 1988
Buku Teks
edited by Alexander Dallin, Gail W. Lapidus
Westerview Press, 1991
Buku Teks