Cita APA

Helgesen, M., Brown, S., & Smith, D. Active listening. expanding. Understanding through content (3a ed.).

Citación estilo Chicago

Helgesen, Marc, Steven Brown, and Dorolyn Smith. Active Listening. Expanding. Understanding Through Content. 3a ed.

Cita MLA

Helgesen, Marc, et al. Active Listening. Expanding. Understanding Through Content. 3a ed.