Redston, C., & Cunningham, G. (2005). Face2face: Pre-intermediate Student´s book. Cambridge University.
Cita Chicago (17th ed.)Redston, Chris, i Gillie Cunningham. Face2face: Pre-intermediate Student´s Book. Cambridge: Cambridge University, 2005.
Cita MLA (9th ed.)Redston, Chris, i Gillie Cunningham. Face2face: Pre-intermediate Student´s Book. Cambridge University, 2005.
Atenció: Aquestes cites poden no estar 100% correctes.