Veblen, Thorstein
Hill and Wang , 1965
Buku Teks
edited by Richard Hofstadter and Wilson Smith
University of Chicago Press, 1961
Buku Teks
Kramer, Martin, author
The Carnegie Foundation , 1980
Buku Teks
Blau, Peter M., author
John Wiley & Sons, [1973, 1973]
Buku Teks
Apps, Jerold W., author
Jossey-Bass , 1988
Buku Teks