Examination papers from University of Cambridge ESOL Examinations: English for speakers of other langusges. (2007). Cambridge Preliminary English test 4 with answers. New York: Cambridge university press.
Citação norma ChicagoExamination papers from University of Cambridge ESOL Examinations: English for speakers of other langusges. Cambridge Preliminary English Test 4 With Answers. New York: Cambridge university press, 2007.
Citação norma MLAExamination papers from University of Cambridge ESOL Examinations: English for speakers of other langusges. Cambridge Preliminary English Test 4 With Answers. New York: Cambridge university press, 2007.
Nota: a formatação da citação pode não corresponder 100% ao definido pela respectiva norma.