APA (7th ed.) Citation

Heaney, S. (1983). An open letter/ by Seamus Heaney. Field Day.

Chicago Style (17th ed.) Citation

Heaney, Seamus. An Open Letter/ by Seamus Heaney. Derry: Field Day, 1983.

MLA (9th ed.) Citation

Heaney, Seamus. An Open Letter/ by Seamus Heaney. Field Day, 1983.

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