edited by Cary L. Cooper, Ivan T. Robertson
John Wiley & Sons, 1990
Buku Teks
Gilmer, B. von Haller (Beverly von Haller), 1909-1994, author
McGraw-Hill, 1967
Buku Teks
Biehler, Robert F.
Houghton Miffiln, [date of publication not identified]
Buku Teks
Auerbach Alan J., author
Brown & Benchmark, 1996
Buku Teks
Blum, Milton L., author
Harper & Row, 1968
Buku Teks