APA Citatie

Helgesen, M., & Brown, S. (1994). Active listening: Building skills for understanding : student's book 2. Cambridge: Cambridge University Press.

Chicago Style citaat

Helgesen, Marc, en Steven Brown. Active Listening: Building Skills for Understanding : Student's Book 2. Cambridge: Cambridge University Press, 1994.

MLA citatie

Helgesen, Marc, en Steven Brown. Active Listening: Building Skills for Understanding : Student's Book 2. Cambridge: Cambridge University Press, 1994.