1
by Krishnan, K.
Published 1985
2
by Passin, Herbert
Published 1982
3
Published 1982
4
Published 1981
5
Published 1999
6
Published 2013
7
8
Published 2010
9
by Wan Mohd.Nor Wan Daud
Published 1994
10
by Huey Siew Wong
Published 2006
11
by Wiersman, William
Published 2000
12
Published 1981
13
by Salkind, Neil J.
Published 2003
14
Published 2007
15
Published 2010
16
Published 1992
17
Published 1996
18
19
20
by Blaug, Mark
Published 1970