Helgesen, M., Brown, S., & Smith, D. Active listening. expanding. Understanding through content (3a ed.).
Chicago Style (17. basım) AtıfHelgesen, Marc, Steven Brown, ve Dorolyn Smith. Active Listening. Expanding. Understanding Through Content. 3a ed.
MLA (8th ed.) AtıfHelgesen, Marc, et al. Active Listening. Expanding. Understanding Through Content. 3a ed.
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