एपीए उद्धरण

(2006). Touchstone class audio: Level 3. New York, N.Y: Cambridge University Press.

शिकागो स्टाइल उद्धरण

Touchstone Class Audio: Level 3. New York, N.Y: Cambridge University Press, 2006.

एमएलए उद्धरण

Touchstone Class Audio: Level 3. New York, N.Y: Cambridge University Press, 2006.