Παραπομπή σε μορφή APA (7η εκδ.)

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.

Παραπομπή σε μορφή Chicago (17η εκδ.)

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

Παραπομπή σε μορφή MLA (9th εκδ.)

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