Examination papers from University of Cambridge ESOL Examinations: English for speakers of other langusges. (2007). Cambridge Preliminary English test 3 with answers. New York: Cambridge university press.
Chicago-tyylinen lähdeviittausExamination papers from University of Cambridge ESOL Examinations: English for speakers of other langusges. Cambridge Preliminary English Test 3 With Answers. New York: Cambridge university press, 2007.
MLA-viiteExamination papers from University of Cambridge ESOL Examinations: English for speakers of other langusges. Cambridge Preliminary English Test 3 With Answers. New York: Cambridge university press, 2007.
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