APA (7th ed.) Citation

Tilbury, A., Hendra, L. A., Rea, D., & Clementson, T. (2011). English unlimited: Upper Intermediate. Coursebook with e-Portfolio. B2. Cambridge University Press.

Chicago Style (17th ed.) Citation

Tilbury, Alex, Leslie Anne Hendra, David Rea, and Theresa Clementson. English Unlimited: Upper Intermediate. Coursebook with E-Portfolio. B2. Cambridge: Cambridge University Press, 2011.

MLA (9th ed.) Citation

Tilbury, Alex, et al. English Unlimited: Upper Intermediate. Coursebook with E-Portfolio. B2. Cambridge University Press, 2011.