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
Goldman, Merle
Harvard University Press, 1967
Buku Teks
Townsend, James R.
University of California Press, 1969
Buku Teks