1
2
by Chin
Published 2003
3
by Purcell
Published 1955
4
5
by Miers
Published 1959
6
by Syed Hasan Alatas
Published 1978
7
8
Published 2005
9
by Suraini Abdullah
Published 2006
10
by Lee
Published 1961
11
by Wan Azizan Wan Ahmad
Published 1976
12
Published 1959
13
Published 1966
14
Published 1972
15
Published 1974
16
Published 1968
17
Published 1972
18
Published 1971
19
Published 1971
20
by Pye
Published 1956