Greenwood, A., Tims, N., Redston, C., & Cunningham, G. (2007). Face2face: Upper Intermediate Student's Book CD-ROM / Audio CD. Cambridge University Press.
Citazione stile Chigago Style (17a edizione)Greenwood, Alison, Nicholas Tims, Chris Redston, e Gillie Cunningham. Face2face: Upper Intermediate Student's Book CD-ROM / Audio CD. Cambridge: Cambridge University Press, 2007.
Citatione MLA (9a ed.)Greenwood, Alison, et al. Face2face: Upper Intermediate Student's Book CD-ROM / Audio CD. Cambridge University Press, 2007.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.