Baldus, D.C.
, Woodworth, G. and Pulaski, C.A. (1989) Equal justice and the death penalty: a legal and empirical analysis. Boston, MA: Northeastern University Press.
2.
Hood, R.
(1996) The death penalty: a world-wide perspective. Oxford: Oxford University Press.
3.
Zimring, F.E.
and Hawkins, G. (1997) Crime is not the problem: lethal violence in America. New York: Oxford University Press.
