Cita APA (7a ed.)

Benn, S. I. (1980). A theory of freedom. Univ. Pr..

Cita Chicago Style (17a ed.)

Benn, S.I.(Stanley Isaac). A Theory of Freedom. Cambridge: Univ. Pr., 1980.

Cita MLA (9a ed.)

Benn, S.I.(Stanley Isaac). A Theory of Freedom. Univ. Pr., 1980.