Cita APA

Brown, S., & Smith, D. (2007). Active listening: Self study audio level 3 (2nd ed.). Cambridge [England] New York: Cambridge University Press.

Citación estilo Chicago

Brown, Steven, y Dorolyn Smith. Active Listening: Self Study Audio Level 3. 2nd ed. Cambridge [England] New York: Cambridge University Press, 2007.

Cita MLA

Brown, Steven, y Dorolyn Smith. Active Listening: Self Study Audio Level 3. 2nd ed. Cambridge [England] New York: Cambridge University Press, 2007.