एपीए उद्धरण

Ruth Gairn. (2008). Oxford word skills: Intermediate. Oxford: University Press.

शिकागो स्टाइल उद्धरण

Ruth Gairn. Oxford Word Skills: Intermediate. Oxford: University Press, 2008.

एमएलए उद्धरण

Ruth Gairn. Oxford Word Skills: Intermediate. Oxford: University Press, 2008.