Helgesen. (1996). Active listening expanding: Understanding through content- Level 3. Cambridge: Cambridge University Press.
Trích dẫn kiểu ChicagoHelgesen. Active Listening Expanding: Understanding Through Content- Level 3. Cambridge: Cambridge University Press, 1996.
Deismireacht MLAHelgesen. Active Listening Expanding: Understanding Through Content- Level 3. Cambridge: Cambridge University Press, 1996.
Rabhadh: D'fhéadfadh nach mbeadh na deismireachtaí seo 100% cruinn i gcónaí.