Blanchard, Benjamin S., author
Prentice-Hall, 1998
Buku Teks
Blanchard, Benjamin S., author
Pearson Education Limited, 2014
Buku Teks
Blanchard, Benjamin S., author
Prentice-Hall, 2006
Buku Teks
Millington, D., author
Ellis Horwood, 1981
Buku Teks
Coad, Peter, author
Yourdon Press, 1991
Buku Teks