1
Published 1976
2
by Holden, Ray
Published 1991
3
by Douglas, John F.
Published 1996
4
by Bostock, L
Published 1994
5
6
by Wright, Paul H.
Published 2002
7
by Board of engineers Malaysia
Published 2002
8
by Hibbeler, R. C.
Published 2001
9
by Hibbeler, R. C.
Published 2001
10
11
by Streetman, Ben G.
Published 2000
12
by Sze, S. M.
Published 2002
13
14
by Petyl, Andrew
Published 1999
15
Published 2004
16
17
Published 1988
18
by Jaeger, Richard C.
Published 2002
19
20
by Keiser, Gerd
Published 2000