Helgesen, M., & Brown, S. (1994). Active Listening: Building Skills for Understanding. Cambridge: Cambridge University.
Παραπομπή Chicago StyleHelgesen, Marc, και Steve Brown. Active Listening: Building Skills for Understanding. Cambridge: Cambridge University, 1994.
Παραπομπή MLAHelgesen, Marc, και Steve Brown. Active Listening: Building Skills for Understanding. Cambridge: Cambridge University, 1994.
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