Barendt, E. (2005). Freedom of speech (2nd ed.). Oxford University Press.
Chicago Style aipamenaBarendt, Eric. Freedom of Speech. 2nd ed. xxxviii, 526p: Oxford University Press, 2005.
MLA aipamenaBarendt, Eric. Freedom of Speech. 2nd ed. Oxford University Press, 2005.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.