एपीए उद्धरण

Naunton, J. (2000). Clockwise: Upper - intermediate : Classbook. New York: Oxford University Press.

शिकागो स्टाइल उद्धरण

Naunton, Jon. Clockwise: Upper - Intermediate : Classbook. New York: Oxford University Press, 2000.

एमएलए उद्धरण

Naunton, Jon. Clockwise: Upper - Intermediate : Classbook. New York: Oxford University Press, 2000.