Cita APA (7a ed.)

Heaney, S. (1996). The Spirit level. Farrar, Straus and Giroux.

Cita Chicago Style (17a ed.)

Heaney, Seamus. The Spirit Level. New York: Farrar, Straus and Giroux, 1996.

Cita MLA (9a ed.)

Heaney, Seamus. The Spirit Level. Farrar, Straus and Giroux, 1996.