edited by Gerald E. Caiden and Heinrich Siedentopf
LexingtonBooks, 1982
Buku Teks
edited by Fredrick B. Pike
University of Notre Dame Press, 1959
Buku Teks
edited by Robert Z. Aliber
Macmillan, 1977
Buku Teks
Pechman, Joseph A., author
Harvester Wheatsheaf, 1989
Buku Teks
by Olivier Blanchard ... [et.al.]
MIT Press, 1991
Buku Teks