Cita APA (7a ed.)

Benn, S. I. (1988). A theory of freedom. University Press.

Cita Chicago Style (17a ed.)

Benn, S. I. A Theory of Freedom. Cambridge [etc.]: University Press, 1988.

Cita MLA (9a ed.)

Benn, S. I. A Theory of Freedom. University Press, 1988.