APA (7th ed.) Zitazioa

Heaney, S. (1990). Selected poems: 1966-1987. Noonday.

Chicago Style (17th ed.) Zitazioa

Heaney, Seamus. Selected Poems: 1966-1987. New York: Noonday, 1990.

MLA (9th ed.) Zitazioa

Heaney, Seamus. Selected Poems: 1966-1987. Noonday, 1990.