Cambridge Assessment English. (2021). C1 Advanced 4 with Answers with Audio with Resource Bank (First published.). Cambridge University Press.
Chicago Style (17th ed.) ZitazioaCambridge Assessment English. C1 Advanced 4 with Answers with Audio with Resource Bank. First published. Cambridge, United Kingdom: Cambridge University Press, 2021.
MLA (9th ed.) ZitazioaCambridge Assessment English. C1 Advanced 4 with Answers with Audio with Resource Bank. First published. Cambridge University Press, 2021.
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