1
by De Fleur, Melvin L.
Published 1988
2
by Sulaiman Zakaria.
Published 1994
3
by Zulkifli Abd. Rahman.
Published 1994
4
by Goldhaber, Gerald M.
Published 1990
5
by Sulaiman Masri.
Published 1997
6
by Carnegie, Dale
Published 1989
7
by Bukhory Ismail.
Published 1997
8
Published 1996
9
by Sarbaugh L. E.
Published 1995
10
by SchrammWilbur.
Published 1992
11
by Zulkifli Yusof
Published 2000
12
by Noraini Mohd. Yusof
Published 1994
13
14
by Decker, Bert.
Published 1993
15
by Severin, Werner J.
Published 1988
16
17
by Shipley, J.F.
Published 1985
18
by Kerrod, Robin
Published 1994
19
by Sanders, Pete.
Published 1995
20
by Aziz Salleh.
Published 2002