Capel, A. (2005). Objective KET: Student's book. Cambridge: Cambridge University Press.
Trích dẫn kiểu ChicagoCapel, Annette. Objective KET: Student's Book. Cambridge: Cambridge University Press, 2005.
Deismireacht MLACapel, Annette. Objective KET: Student's Book. Cambridge: Cambridge University Press, 2005.
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