Citazione Stile APA (7a Edizione)

Tilbury, A., Hendra, L. A., & Ackroyd, S. (2011). English unlimited: Upper Intermediate Teacher's Pack. B2 (1a. ed.). Cambridge University Press.

Citazione stile Chigago Style (17a edizione)

Tilbury, Alex, Leslie Anne Hendra, e Sarah Ackroyd. English Unlimited: Upper Intermediate Teacher's Pack. B2. 1a. ed. Cambridge University Press, 2011.

Citatione MLA (9a ed.)

Tilbury, Alex, et al. English Unlimited: Upper Intermediate Teacher's Pack. B2. 1a. ed. Cambridge University Press, 2011.