Kolb, David A., author
Prentice-Hall, 1991
Buku Teks
Aamodt, Michael G., author
Cengage Learning, 2016
Buku Teks
French, Wendell L., author
Harper & Row, 1985.
Buku Teks
Bass, Bernard M., author
Allyn and Bacon, 1973
Buku Teks
Muchinsky, Paul M., author
Wadsworth, 2000
Buku Teks