Kolb, David A., author
Prentice-Hall, 1991
Buku Teks
Kolb, David A., author
Prentice-Hall, 1995
Buku Teks
Kolb, David A., author
Prentice-Hall, 1984
Buku Teks
Kolb, David A., author
Prentice-Hall, 1991
Buku Teks
Porter, Donald E., author
International , 1964
Buku Teks