Cullen, P., Jakeman, V., & French, A. (2014). The offical Cambridge guide to IELTS for academic & general training: Student's book with answers. New York: Cambridge university press.
Chicago-стиль цитированияCullen, Pauline, Vanessa Jakeman, và Amanda French. The Offical Cambridge Guide to IELTS for Academic & General Training: Student's Book With Answers. New York: Cambridge university press, 2014.
MLA-цитированиеCullen, Pauline, Vanessa Jakeman, và Amanda French. The Offical Cambridge Guide to IELTS for Academic & General Training: Student's Book With Answers. New York: Cambridge university press, 2014.
Предупреждение: эти цитированмия не могут быть всегда правильны на 100%.