Cita APA (7a ed.)

Foster, R. F. (2020). On Seamus Heaney. Princeton University Press.

Cita Chicago Style (17a ed.)

Foster, R. F. On Seamus Heaney. Princeton, New Jersey: Princeton University Press, 2020.

Cita MLA (8a ed.)

Foster, R. F. On Seamus Heaney. Princeton University Press, 2020.