1
Published 1997
2
Published 2007
3
Published 2011
4
by Chan, Eng Heng
Published 2012
5
Published 1975
6
Published 1994
7
Published 2008
8
by Barnett, Laurie Sue
Published 2002
9
Published 2005
10
Published 2003
11
by Wells, Stanley.
Published 1998
12
by Seely, John
Published 2002
13
by Rogak, Lisa
Published 2005
14
15
by Chin, Soek Hock
Published 2006
16
by Fidelis, Fabian
Published 2005
17
18
by Liu, Yong
Published 1998
19
by Tao, Jie
Published 1995
20