Aamodt, Michael G., author
Thomson/Wadsworth, 2004
Buku Teks
Dipboye, Robert L., author
Harcourt Brace College, 1994
Buku Teks
McCormick, Ernest James, author
Prentice-Hall, 1985
Buku Teks
Bobko, Philip
New York McGraw-Hill 1995,
Buku Teks
edited by Cary L. Cooper, Ivan T. Robertson
John Wiley & Sons, 1990
Buku Teks