Redston, C., & Cunningham, G. (2006). Face2face: Intermediate student´s book. Cambridge University.

Redston, Chris, and Gillie Cunningham. Face2face: Intermediate Student´s Book. Cambridge: Cambridge University, 2006.

Redston, Chris, and Gillie Cunningham. Face2face: Intermediate Student´s Book. Cambridge University, 2006.