1
2
by Wheelen
Published 1992
3
by Organ
Published 1991
4
by Zimbardo
Published 1989
5
by Lucas, 1929-
Published 1993
6
by Giblin
Published 1956
7
8
9
10
by Lambert
Published 1993
11
12
13
by Robertson
Published 1993
14
15
16
by Jick, 1949-
Published 1993
17
18
by Kyburg, 1928-
Published 1990
19
by Kindleberger
Published 1993
20
by Law
Published 1993