Tims, N., Redston, C., & Cunningham, G. (2006). Face2face: Intermediate workbook. Cambridge University.
Cita Chicago Style (17a ed.)Tims, Nicholas, Chris Redston, y Gillie Cunningham. Face2face: Intermediate Workbook. Cambridge: Cambridge University, 2006.
Cita MLA (9a ed.)Tims, Nicholas, et al. Face2face: Intermediate Workbook. Cambridge University, 2006.
Precaución: Estas citas no son 100% exactas.