Cita APA (7th ed.)

Widdowson, P. (1999). Literature: Introduction. Routledge.

Cita Chicago (17th ed.)

Widdowson, Peter. Literature: Introduction. London: Routledge, 1999.

Cita MLA (9th ed.)

Widdowson, Peter. Literature: Introduction. Routledge, 1999.