Kosters, Marvin H., author
American Enterprise Institute for Public Policy Research, 1975
Buku Teks
The Commision, 1980
Buku Teks
Ringer, Robert J.
Fawcett Crest, 1980
Buku Teks
Christenson, Reo M.
Harper & Row Publishers, 1982
Buku Teks
Galbraith, John Kenneth, 1908-2006, author
Houghton Miffiln, 1952
Buku Teks