एपीए उद्धरण

Richards, J. C. (1994). Changes: English for international communication. Cambridge: Cambridge University Press.

शिकागो स्टाइल उद्धरण

Richards, Jack C. Changes: English for International Communication. Cambridge: Cambridge University Press, 1994.

एमएलए उद्धरण

Richards, Jack C. Changes: English for International Communication. Cambridge: Cambridge University Press, 1994.