edited by Karl Brunner, Allan H. Meltzer
Nort-Holland , 1977
Buku Teks
edited by Isaiah Frank
Johns Hopkins University Press, 1975
Buku Teks
Balaam, David N., 1950-, author
Prentice-Hall, 1996
Buku Teks
edited by W. Ladd Hollist
Westview Press, 1985
Buku Teks
Hodgetts, Richard M., author
McGraw-Hill, 1991
Buku Teks