APA (7th ed.) Citation

Rea, D., Clementson, T., Hedra, L. A., & Tilbury, A. (2011). English Unlimited: B1+ Intermediate Coursebook with e-portfolio. Cambridge University Press.

Chicago Style (17th ed.) Citation

Rea, David, Theresa Clementson, Leslie Anne Hedra, and Alex Tilbury. English Unlimited: B1+ Intermediate Coursebook with E-portfolio. Cambridge: Cambridge University Press, 2011.

MLA (9th ed.) Citation

Rea, David, et al. English Unlimited: B1+ Intermediate Coursebook with E-portfolio. Cambridge University Press, 2011.