Helgesen, M., & Brown, S. (1995). Active listening: Building skills for understanding : teachers edition. New York: Cambridge University Press.
Παραπομπή Chicago StyleHelgesen, Marc., και Steven Brown. Active Listening: Building Skills for Understanding : Teachers Edition. New York: Cambridge University Press, 1995.
Παραπομπή MLAHelgesen, Marc., και Steven Brown. Active Listening: Building Skills for Understanding : Teachers Edition. New York: Cambridge University Press, 1995.
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