1
by Fraenkel
Published 2006
2
by Patton
Published 2002
3
4
by Fowler
Published 2014
5
6
by Boruch
Published 1997
7
by Yin
Published 1994
8
by Weisberg
Published 1992
9
by Carmines
Published 1979
10
by Bailey
Published 1994
11
by Benfer
Published 1991
12
by Weber
Published 1990
13
by Hedrick
Published 1993
14
by Fowler
Published 1995