Marc Helgesen. (1994). Active listening building: Building skills for understanding. Cambridge, UK: Cambridge university press.
Chicago ZitierstilMarc Helgesen. Active Listening Building: Building Skills for Understanding. Cambridge, UK: Cambridge university press, 1994.
MLA ZitierstilMarc Helgesen. Active Listening Building: Building Skills for Understanding. Cambridge, UK: Cambridge university press, 1994.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.