Dyfyniad APA

Helgesen, M., & Brown, S. (1999). Active listening: Building skills for understanding : Level 2 [Đĩa CD-ROM]. Cambridge: Cambridge University Press.

Dyfyniad Arddull Chicago

Helgesen, Marc, và Steven Brown. Active Listening: Building Skills for Understanding : Level 2 [Đĩa CD-ROM]. Cambridge: Cambridge University Press, 1999.

Dyfyniad MLA

Helgesen, Marc, và Steven Brown. Active Listening: Building Skills for Understanding : Level 2 [Đĩa CD-ROM]. Cambridge: Cambridge University Press, 1999.

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