edited by John S. Major
Westview Press, 1986
Buku Teks
edited by Anthony J. Kane
Westview Press, 1990
Buku Teks
Boulder Westview Press 1992,
Buku Teks
Economic Information and Agency, 1987
Buku Teks
edited by Marshall M. Bouton and Philip Oldenburg
Westview Press, 1989
Buku Teks