Hirst, Paul, author
Murai Kencana, 2004
Buku Teks
Jon, Sang-in, author
Ecoribureu, 2007
Buku Teks
Galbraith, John Kenneth, 1908-2006, author
Houghton Miffiln, 1952
Buku Teks
edited by C. Stewart Sheppard, Donald C. Carroll
John Wiley & Sons, 1980
Buku Teks
Veblen, Thorstein, author
The Viking Press, Inc., 1954
Buku Teks