APA (7th ed.) Zitazioa

O'Brien. Seamus Heaney as Aesthetic Thinker. Syracuse University Press.

Chicago Style (17th ed.) Zitazioa

O'Brien. Seamus Heaney as Aesthetic Thinker. Syracuse University Press.

MLA (9th ed.) Zitazioa

O'Brien. Seamus Heaney as Aesthetic Thinker. Syracuse University Press.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.