APA

Williams Bernard,, . (1972). Morality : An introduction to ethics. Cambridge: Cambridge University Press.

Chicago

Williams Bernard,, . 1972. Morality : An introduction to ethics. Cambridge: Cambridge University Press.

Harvard

Williams Bernard,, . (1972). Morality : An introduction to ethics. Cambridge: Cambridge University Press.

MLA

Williams Bernard,, . Morality : An introduction to ethics. Cambridge: Cambridge University Press. 1972.