Helgesen, M., Brown, S., & Smith, D. (1996). Active listening: Expanding understanding through content : student's book 3. Cambridge: Cambridge University Press.
Style de citation ChicagoHelgesen, Marc, Steven Brown, et Dorolyn Smith. Active Listening: Expanding Understanding Through Content : Student's Book 3. Cambridge: Cambridge University Press, 1996.
Style de citation MLAHelgesen, Marc, Steven Brown, et Dorolyn Smith. Active Listening: Expanding Understanding Through Content : Student's Book 3. Cambridge: Cambridge University Press, 1996.
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