University of Cambridge. (2010). Cambridge preliminary English test 6 with answers: Examination papers from University of Cambridge ESOL examinations: English for Speakers of Other Languages. New York: Cambridge university press.
Stile di citazione ChicagoUniversity of Cambridge. Cambridge Preliminary English Test 6 With Answers: Examination Papers From University of Cambridge ESOL Examinations: English for Speakers of Other Languages. New York: Cambridge university press, 2010.
Citazione MLAUniversity of Cambridge. Cambridge Preliminary English Test 6 With Answers: Examination Papers From University of Cambridge ESOL Examinations: English for Speakers of Other Languages. New York: Cambridge university press, 2010.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.