APA (7th ed.) Zitazioa

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

Chicago Style (17th ed.) Zitazioa

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

MLA (9th ed.) Zitazioa

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