1
Published 1993
2
by Fuller, Floyd
Published 1994
3
4
by Lewis, Colin
Published 1988
5
6
Published 1992
7
8
by Beskeen, David W.
Published 2002
9
Published 2000
10
by Zikmund, William G.
Published 2003
11
by Beskeen, David W.
Published 2002
12
13
14
by Saunders, Mark.
Published 2003
15
by Bulmer, John
Published 2000
16
17
by Abbott, Keith
Published 2002
18
19
Published 1993
20