Tims, N., Redston, C., & Cunningham, G. (2005). Face2face: Pre-intermediate workbook. Cambridge University.
Chicago Style aipamenaTims, Nicholas, Chris Redston, and Gillie Cunningham. Face2face: Pre-intermediate Workbook. Cambridge: Cambridge University, 2005.
MLA aipamenaTims, Nicholas, et al. Face2face: Pre-intermediate Workbook. Cambridge University, 2005.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.