1
by Khoo
Published 1967
2
by Khoo
Published 1969
3
by Khoo
Published 1987
4
by Khoo
Published 1986
5
6
by Khoo
Published 2005
7
by Khoo
Published 2007
8
9
by Khoo
Published 2008
10
by Khoo
Published 2008
11
by Khoo, Gilbert
Published 1977
12
13
by Khoo Dato'
Published 2007
14
by Khoo, Boo Teik
Published 2003
15
16
by Khoo, Kheng-Hor
Published 2003
17
18
19
20
by Khoo, Boo Teik
Published 1995