APA (7th ed.) Citation

Foster, T. C. (1989). Seamus Heaney. O'Brien.

Chicago Style (17th ed.) Citation

Foster, Thomas C. Seamus Heaney. Dublin: O'Brien, 1989.

MLA (9th ed.) Citation

Foster, Thomas C. Seamus Heaney. O'Brien, 1989.

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