Cita APA (7a ed.)

West, C. (2010). Recycling your english: With removable key (4th ed.). Cambridge University Press.

Cita Chicago Style (17a ed.)

West, Clare. Recycling Your English: With Removable Key. 4th ed. Cambridge: Cambridge University Press, 2010.

Cita MLA (9a ed.)

West, Clare. Recycling Your English: With Removable Key. 4th ed. Cambridge University Press, 2010.