Cita APA

Helgesen, M., Brown, S., & Smith, D. (1997). Active listening: Expanding understanding through content : teachers edition 3. Cambridge: Cambridge University Press.

Citación estilo Chicago

Helgesen, Marc., Steven Brown, y Dorolyn Smith. Active Listening: Expanding Understanding Through Content : Teachers Edition 3. Cambridge: Cambridge University Press, 1997.

Cita MLA

Helgesen, Marc., Steven Brown, y Dorolyn Smith. Active Listening: Expanding Understanding Through Content : Teachers Edition 3. Cambridge: Cambridge University Press, 1997.