1
2
by Ridzuan Awang
Published 1989
3
4
Published 1985
5
by Guest, C.W. Graham
Published 1930
6
Published 1941
7
8
by Stocks, Timothy E
Published 1992
9
Published 1957
10
by Goh, Chen Chuan
Published 2001
11
by Hart, O William
Published 1957
12
by William Edward, Sir
Published 1973
13
by Cross, C. A
Published 1974
14
Published 2000
15
Published 1999
16
Published 2000
17
by Nasser, S.M.A
Published 1986
18
19
by Keating, Donald
Published 1982
20
by El Tayeb, El Gaily Ahmed
Published 1998