Cita APA (7th ed.)

Redston, C., & Cunningham, G. (2007). Face2face: Upper intermediate. Student's book (1a. ed.). Cambridge University Press.

Cita Chicago (17th ed.)

Redston, Chris, i Gillie Cunningham. Face2face: Upper Intermediate. Student's Book. 1a. ed. Cambridge: Cambridge University Press, 2007.

Cita MLA (9th ed.)

Redston, Chris, i Gillie Cunningham. Face2face: Upper Intermediate. Student's Book. 1a. ed. Cambridge University Press, 2007.