O'Brien. Seamus Heaney as Aesthetic Thinker. Syracuse University Press.
Citazione stile Chigago Style (17a edizione)O'Brien. Seamus Heaney as Aesthetic Thinker. Syracuse University Press.
Citatione MLA (9a ed.)O'Brien. Seamus Heaney as Aesthetic Thinker. Syracuse University Press.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.