APA (7th ed.) Citation

Heaney, S. (1969). Door into dark/ Seamus Heaney. Faber and Faber.

Chicago Style (17th ed.) Citation

Heaney, Seamus. Door into Dark/ Seamus Heaney. London: Faber and Faber, 1969.

MLA (9th ed.) Citation

Heaney, Seamus. Door into Dark/ Seamus Heaney. Faber and Faber, 1969.

Warning: These citations may not always be 100% accurate.