APA (7th ed.) Citation

Foster, T. C. (1989). Seamus Heaney (1. publ.). O'Brien Press.

Chicago Style (17th ed.) Citation

Foster, Thomas C. Seamus Heaney. 1. publ. Dublin: O'Brien Press, 1989.

MLA (9th ed.) Citation

Foster, Thomas C. Seamus Heaney. 1. publ. O'Brien Press, 1989.

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