Cita APA (7a ed.)

Thornbury, S. (1997). About language: Tasks for teachers of English (1st. ed.). Cambridge University.

Cita Chicago Style (17a ed.)

Thornbury, Scott. About Language: Tasks for Teachers of English. 1st. ed. Cambridge: Cambridge University, 1997.

Cita MLA (9a ed.)

Thornbury, Scott. About Language: Tasks for Teachers of English. 1st. ed. Cambridge University, 1997.