APA (7th ed.) Citation

Blackwell's Rare Books. (2016). Seamus Heaney. Blackwell's Rare Books.

Chicago Style (17th ed.) Citation

Blackwell's Rare Books. Seamus Heaney. [Oxford]: Blackwell's Rare Books, 2016.

MLA (9th ed.) Citation

Blackwell's Rare Books. Seamus Heaney. Blackwell's Rare Books, 2016.

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