APA-referens (7:e uppl.)

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

Chicago-referens (17:e uppl.)

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

MLA-referens (8:e uppl.)

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