APA (7th ed.) Zitazioa
Gray, J. (1996). Mill on liberty: A defence (2nd ed.). Routledge & K. Paul.
Chicago Style (17th ed.) Zitazioa
Gray, John. Mill on Liberty: A Defence. 2nd ed. London ; New York: Routledge & K. Paul, 1996.
MLA (9th ed.) Zitazioa
Gray, John. Mill on Liberty: A Defence. 2nd ed. Routledge & K. Paul, 1996.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.