Dokumentuaren aipamena

APA (7th ed.) Zitazioa
Heyman, S. J. (2008). Free speech and human dignity. Yale University Press.
Chicago Style (17th ed.) Zitazioa
Heyman, Steven J. Free Speech and Human Dignity. New Havem: Yale University Press, 2008.
MLA (9th ed.) Zitazioa
Heyman, Steven J. Free Speech and Human Dignity. Yale University Press, 2008.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.