Helgesen, M., Brown, S., & Smith, D. (1997). Active listening: Expanding understanding through content : teacher's edition 3. Cambridge: Cambridge University Press.
Dyfyniad Arddull ChicagoHelgesen, Marc, Steven Brown, và Dorolyn Smith. Active Listening: Expanding Understanding Through Content : Teacher's Edition 3. Cambridge: Cambridge University Press, 1997.
Dyfyniad MLAHelgesen, Marc, Steven Brown, và Dorolyn Smith. Active Listening: Expanding Understanding Through Content : Teacher's Edition 3. Cambridge: Cambridge University Press, 1997.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.