Citazione Stile APA (7a Edizione)

Rea, D., Clementson, T., Tilbury, A., & Hendra, L. A. (2011). English Unlimited: Intermediate. Course Book with e-Portfolio. B1 Plus (1a. ed.). Cambridge University Press.

Citazione stile Chigago Style (17a edizione)

Rea, David, Theresa Clementson, Alex Tilbury, e Leslie Anne Hendra. English Unlimited: Intermediate. Course Book with E-Portfolio. B1 Plus. 1a. ed. Cambridge: Cambridge University Press, 2011.

Citatione MLA (9a ed.)

Rea, David, et al. English Unlimited: Intermediate. Course Book with E-Portfolio. B1 Plus. 1a. ed. Cambridge University Press, 2011.