Helgesen, M., Brown, S., & Smith, D. (1996). Active listening: Expanding understanding through content : Level 3 [Băng Casset]. Cambridge: Cambridge University Press.
Stile di citazione ChicagoHelgesen, Marc, Steven Brown, e Dorolyn Smith. Active Listening: Expanding Understanding Through Content : Level 3 [Băng Casset]. Cambridge: Cambridge University Press, 1996.
Citazione MLAHelgesen, Marc, Steven Brown, e Dorolyn Smith. Active Listening: Expanding Understanding Through Content : Level 3 [Băng Casset]. Cambridge: Cambridge University Press, 1996.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.