Helgesen, M., Brown, S., & Smith, D. (1996). Active listening: Expanding understanding through content : Level 3 [Băng Casset]. Cambridge: Cambridge University Press.
Trích dẫn kiểu ChicagoHelgesen, Marc, Steven Brown, và Dorolyn Smith. Active Listening: Expanding Understanding Through Content : Level 3 [Băng Casset]. Cambridge: Cambridge University Press, 1996.
MLA引文Helgesen, Marc, Steven Brown, và Dorolyn Smith. Active Listening: Expanding Understanding Through Content : Level 3 [Băng Casset]. Cambridge: Cambridge University Press, 1996.
警告：這些引文格式不一定是100％准確.