Wiarda, Howard J., author
Thomson Wadsworth, 2000
Buku Teks
Alderfer, Harold F., author
Frederick A. Praeger, 1967
Buku Teks
Rourke, Francis E., author
Little, Brown, 1979
Buku Teks
Simon, Herbert A., author
Alfred A. Knopf, 1973
Buku Teks
Bartholomew, Paul C., author
Littlefield, Adams, 1959
Buku Teks