Spector, Paul E., author
Jones & Bartllett, 2012
Buku Teks
Muchinsky, Paul M., author
Wadsworth, 2000
Buku Teks
Aamodt, Michael G., author
Thomson/Wadsworth, 2004
Buku Teks
Bass, Bernard M., author
Allyn and Bacon, 1973
Buku Teks
Dipboye, Robert L., author
Harcourt Brace College, 1994
Buku Teks