Helgesen, M., Brown, S., & Smith, D. (1996). Active listening: Expanding understanding through content : Level 3 [Băng Casset]. Cambridge: Cambridge University Press.
Παραπομπή Chicago StyleHelgesen, Marc, Steven Brown, και Dorolyn Smith. Active Listening: Expanding Understanding Through Content : Level 3 [Băng Casset]. Cambridge: Cambridge University Press, 1996.
Παραπομπή MLAHelgesen, Marc, Steven Brown, και Dorolyn Smith. Active Listening: Expanding Understanding Through Content : Level 3 [Băng Casset]. Cambridge: Cambridge University Press, 1996.
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