Heywood Andrew. (2004). Political Theory (3rd.). Palgrave Mcmillan.
Chicago Style aipamenaHeywood Andrew. Political Theory. 3rd. New York: Palgrave Mcmillan, 2004.
MLA aipamenaHeywood Andrew. Political Theory. 3rd. Palgrave Mcmillan, 2004.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.