1
by Davies, Margaret
Published 1994
2
by Cloninger, Susan C.
Published 1996
3
by Pojman, Louis P.
Published 1998
4
by Stoljar, S. J.
Published 1980
5
6
7
by Dray, William H.
Published 1993
8
9
by Jencks, Charles
Published 1986
10