Cita APA

Helgesen, M., & Brown, S. (1997). Active listening: Building skills for understanding. Cambridge, Reino Unido: Cambridge University Press.

Citación estilo Chicago

Helgesen, Marc, y Steven Brown. Active Listening: Building Skills for Understanding. Cambridge, Reino Unido: Cambridge University Press, 1997.

Cita MLA

Helgesen, Marc, y Steven Brown. Active Listening: Building Skills for Understanding. Cambridge, Reino Unido: Cambridge University Press, 1997.