University of Cambridge. ESOL Examinations & Cambridge University Press. (2014). Cambridge English advanced 1: Certificate in advanced English, with answers :authenthic examination papers from Cambridge English Language Assessment. Cambridge University Press.
Cita Chicago Style (17a ed.)University of Cambridge. ESOL Examinations y Cambridge University Press. Cambridge English Advanced 1: Certificate in Advanced English, with Answers :authenthic Examination Papers from Cambridge English Language Assessment. Cambridge: Cambridge University Press, 2014.
Cita MLA (9a ed.)University of Cambridge. ESOL Examinations y Cambridge University Press. Cambridge English Advanced 1: Certificate in Advanced English, with Answers :authenthic Examination Papers from Cambridge English Language Assessment. Cambridge University Press, 2014.
