Marc Helgesen. (1994). Active listening building: Skills for understanding (teacher's edition 2). Cambridge, UK: Cambridge Univ. press.
Trích dẫn kiểu ChicagoMarc Helgesen. Active Listening Building: Skills for Understanding (teacher's Edition 2). Cambridge, UK: Cambridge Univ. press, 1994.
MLA CitationMarc Helgesen. Active Listening Building: Skills for Understanding (teacher's Edition 2). Cambridge, UK: Cambridge Univ. press, 1994.
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