Greenwood, A., Tims, N., Redston, C., & Cunningham, G. (2007). Face2face: Upper Intermediate Student's Book CD-ROM / Audio CD. Cambridge University Press.

Greenwood, Alison, Nicholas Tims, Chris Redston, and Gillie Cunningham. Face2face: Upper Intermediate Student's Book CD-ROM / Audio CD. Cambridge: Cambridge University Press, 2007.

Greenwood, Alison, et al. Face2face: Upper Intermediate Student's Book CD-ROM / Audio CD. Cambridge University Press, 2007.