1
2
3
by Chapman, J. R.
Published 1993
4
Published 1993
5
6
7
8
by Gujarati, Damodar N.
Published 1998
9
by Bulmer, John
Published 2003
10
by Sloman, John
Published 1997
11
by Riley, Tim M.
Published 2001
12
by Riley, Tim.
Published 2001