Helgesen, M., & Brown, S. (1996). Active listening: Introducing skills for understanding (Teacher's ed.). Cambridge University Press.
Lua i Stíl Chicago (17ú heag.)Helgesen, Marc, agus Steven Brown. Active Listening: Introducing Skills for Understanding. Teacher's ed. Cambridge [England] ; New York, NY: Cambridge University Press, 1996.
Lua MLA (8ú heag.)Helgesen, Marc, agus Steven Brown. Active Listening: Introducing Skills for Understanding. Teacher's ed. Cambridge University Press, 1996.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.