(2005). Face2face: Elementary class audio CDs. New York, US: Cambridge University Press.
शिकागो स्टाइल उद्धरणFace2face: Elementary Class Audio CDs. New York, US: Cambridge University Press, 2005.
एमएलए उद्धरणFace2face: Elementary Class Audio CDs. New York, US: Cambridge University Press, 2005.
चेतावनी: ये उद्धरण हमेशा 100% सटीक नहीं हो सकते हैं.