Cita APA

Helgesen, M., & Brown, S. 1. (1994). Active listening 2: Building skills for understanding. Cambridge University Press.

Citación estilo Chicago

Helgesen, Marc, y Steven 1952- Brown. Active Listening 2: Building Skills for Understanding. Cambridge University Press, 1994.

Cita MLA

Helgesen, Marc, y Steven 1952- Brown. Active Listening 2: Building Skills for Understanding. Cambridge University Press, 1994.