Jakeman, V. (2004). Step Up to IELTS: Student's Book. Cambridge: Cambridge University Press.
Trích dẫn kiểu ChicagoJakeman, Vanessa. Step Up to IELTS: Student's Book. Cambridge: Cambridge University Press, 2004.
MLA CitationJakeman, Vanessa. Step Up to IELTS: Student's Book. Cambridge: Cambridge University Press, 2004.
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