1
by Elling
Published 2008
2
3
4
Published 1991
5
6
Published 2006
7
by Thornhill, C. J., 1966-
Published 2006
8
by Freeman
Published 2007
9
by Kymlicka
Published 1990
10
Published 1990
11
Published 2004
12
13
by Muresan
Published 2014
14
by Lewis, 1916-
Published 1947
15
by Adler, 1902-2001.
Published 1996
16
by Wolin
Published 2004
17
by Schulman
Published 2011
18
19
Published 1987
20
Published 1992