Cita APA (7a ed.)

Dudley-Evans, T. Development in english as a specific language. Cambridge University Press.

Cita Chicago Style (17a ed.)

Dudley-Evans, Tony. Development in English as a Specific Language. Cambridge, United Kingdom: Cambridge University Press.

Cita MLA (9a ed.)

Dudley-Evans, Tony. Development in English as a Specific Language. Cambridge University Press.