APA

Frey R G, Morris Cristopher W, . (1991). Liability and responsibility : Essays in law and morals. Cambridge: Cambridge University Press.

Chicago

Frey R G, Morris Cristopher W, . 1991. Liability and responsibility : Essays in law and morals. Cambridge: Cambridge University Press.

Harvard

Frey R G, Morris Cristopher W, . (1991). Liability and responsibility : Essays in law and morals. Cambridge: Cambridge University Press.

MLA

Frey R G, Morris Cristopher W, . Liability and responsibility : Essays in law and morals. Cambridge: Cambridge University Press. 1991.