एपीए उद्धरण

Richards, J. C. (1998). Changes: English for international communication : INTRO workbook. Cambridge University Press.

शिकागो स्टाइल उद्धरण

Richards, Jack C. Changes: English for International Communication : INTRO Workbook. Cambridge University Press, 1998.

एमएलए उद्धरण

Richards, Jack C. Changes: English for International Communication : INTRO Workbook. Cambridge University Press, 1998.