Cita APA (7th ed.)
Gray, J. (1996). Mill on liberty: A defence (2nd ed.). Routledge & K. Paul.
Cita Chicago (17th ed.)
Gray, John. Mill on Liberty: A Defence. 2nd ed. London ; New York: Routledge & K. Paul, 1996.
Cita MLA (9th ed.)
Gray, John. Mill on Liberty: A Defence. 2nd ed. Routledge & K. Paul, 1996.
Atenció: Aquestes cites poden no estar 100% correctes.