Cita APA (7th ed.)

Widdowson, H. G. (2003). Defining issues in english language teaching (1a. ed.). Oxford University.

Cita Chicago (17th ed.)

Widdowson, H. G. Defining Issues in English Language Teaching. 1a. ed. Oxford: Oxford University, 2003.

Cita MLA (9th ed.)

Widdowson, H. G. Defining Issues in English Language Teaching. 1a. ed. Oxford University, 2003.