Helgesen, M., Brown, S., & Smith, D. (1996). Active listening: Expanding understanding through content : student's book 3. Cambridge: Cambridge University Press.
Chicago-стиль цитированияHelgesen, Marc, Steven Brown, và Dorolyn Smith. Active Listening: Expanding Understanding Through Content : Student's Book 3. Cambridge: Cambridge University Press, 1996.
MLA-цитированиеHelgesen, Marc, Steven Brown, và Dorolyn Smith. Active Listening: Expanding Understanding Through Content : Student's Book 3. Cambridge: Cambridge University Press, 1996.
Предупреждение: эти цитированмия не могут быть всегда правильны на 100%.