Cita APA

Alex Tilbury, & Alex Tilbury; Leslie Anne Hendra; Sarah Ackroyd. (2011). English unlimited. B2, Upper intermediate Teacher's Pack. Cambridge: Cambridge University Press.

Citación estilo Chicago

Alex Tilbury, y Alex Tilbury; Leslie Anne Hendra; Sarah Ackroyd. English Unlimited. B2, Upper Intermediate Teacher's Pack. Cambridge: Cambridge University Press, 2011.

Cita MLA

Alex Tilbury, y Alex Tilbury; Leslie Anne Hendra; Sarah Ackroyd. English Unlimited. B2, Upper Intermediate Teacher's Pack. Cambridge: Cambridge University Press, 2011.