Cita APA (7th ed.)

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

Cita Chicago (17th ed.)

Thornbury, Scott. About Language: Tasks for Teachers of English. Cambridge ; New York: Cambridge University Press, 1997.

Cita MLA (8th ed.)

Thornbury, Scott. About Language: Tasks for Teachers of English. Cambridge University Press, 1997.