APA aipamena

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

Chicago Style aipamena

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

MLA aipamena

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

Kontuz: berrikusi erreferentzia hauek erabili aurretik.