Livingstone, James M.
Associated Business Programmes, 1975
Buku Teks
Stopford, John Morton
Basic Books, 1972
Buku Teks
Ball, Donald A., author
Irwin/McGraw-Hill, 2002
Multimedia
Vernon, Raymond, author
Harvard University Press, 1972
Buku Teks
Sanyal, Rajib N, author
Prentice-Hall, 2001
Buku Teks