Brown, S., & Smith, D. (2007). Active listening: Self study audio level 3 (2nd ed.). Cambridge [England] New York: Cambridge University Press.
Chicago Style citaatBrown, Steven, en Dorolyn Smith. Active Listening: Self Study Audio Level 3. 2nd ed. Cambridge [England] New York: Cambridge University Press, 2007.
MLA citatieBrown, Steven, en Dorolyn Smith. Active Listening: Self Study Audio Level 3. 2nd ed. Cambridge [England] New York: Cambridge University Press, 2007.
Let op: Deze citaties zijn niet altijd 100% accuraat.