Cambridge University Press. (2018). Cambridge IELTS 13 with Answers: Academic: Fully Update Version: Examination Papers From University Of Cambridge Esol Examination (Fully Updated Version.). Cambridge University Press.
Chicagoスタイル(17版)引用形式Cambridge University Press. Cambridge IELTS 13 with Answers: Academic: Fully Update Version: Examination Papers From University Of Cambridge Esol Examination. Fully Updated Version. Cambridge: Cambridge University Press, 2018.
MLA(9版)引用形式Cambridge University Press. Cambridge IELTS 13 with Answers: Academic: Fully Update Version: Examination Papers From University Of Cambridge Esol Examination. Fully Updated Version. Cambridge University Press, 2018.
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