Helgesen, M. (1995). Active listening: Introducing skills and understanding. Cambridge, UK: Cambridge university press.
Trích dẫn kiểu ChicagoHelgesen, Marc. Active Listening: Introducing Skills and Understanding. Cambridge, UK: Cambridge university press, 1995.
MLA citiranjeHelgesen, Marc. Active Listening: Introducing Skills and Understanding. Cambridge, UK: Cambridge university press, 1995.
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