1
Published 2003
2
Published 2008
3
by Robbins
Published 1996
4
by Dato' Dr Mohd Fadzilah Kamsah
Published 2005
5
by Khoo Kheng-Hor
Published 2004
6
by Ackoff
Published 2005
7
by Hearn
Published 1987
8
by Robertson
Published 1983
9
by Earl, Peter E.
Published 1984
10
Published 1996