Kolb, David A., author
Prentice-Hall, 1991
Buku Teks
Downey, H. Kirk
West Publishing, 1977
Buku Teks
French, Wendell L., author
Harper & Row, 1985.
Buku Teks
Staw, Barry M., author
Macmillan, 1991
Buku Teks
Kolb, David A., author
Prentice-Hall, 1995
Buku Teks