Helgesen. (1996). Active listening expanding: Understanding through content- Level 3. Cambridge: Cambridge University Press.
Chicago Style CitationHelgesen. Active Listening Expanding: Understanding Through Content- Level 3. Cambridge: Cambridge University Press, 1996.
Cita MLAHelgesen. Active Listening Expanding: Understanding Through Content- Level 3. Cambridge: Cambridge University Press, 1996.
Atenció: Aquestes cites poden no estar 100% correctes.