Marc Helgesen. (1996). Active listening expanding - students'book 3: Expanding understanding through content. Cambridge, UK: Cambridge university press.
Trích dẫn kiểu ChicagoMarc Helgesen. Active Listening Expanding - Students'book 3: Expanding Understanding Through Content. Cambridge, UK: Cambridge university press, 1996.
MLA citiranjeMarc Helgesen. Active Listening Expanding - Students'book 3: Expanding Understanding Through Content. Cambridge, UK: Cambridge university press, 1996.
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