University of Cambridge. (2009). Cambridge IELTS 7 with answers: Examination papers from University of Cambridge ESOL examinations: English for Speakers of Other Languages. New York: Cambridge university Press.
Chicago-стиль цитированияUniversity of Cambridge. Cambridge IELTS 7 With Answers: Examination Papers From University of Cambridge ESOL Examinations: English for Speakers of Other Languages. New York: Cambridge university Press, 2009.
MLA-цитированиеUniversity of Cambridge. Cambridge IELTS 7 With Answers: Examination Papers From University of Cambridge ESOL Examinations: English for Speakers of Other Languages. New York: Cambridge university Press, 2009.
Предупреждение: эти цитированмия не могут быть всегда правильны на 100%.