APA citiranje

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

Trích dẫn kiểu Chicago

Richards, Jack C., Jonathan Hull, và Susan Proctor. Changes: English for International Communication : INTRO Workbook. Cambridge: Cambridge University Press, 1998.

MLA citiranje

Richards, Jack C., Jonathan Hull, và Susan Proctor. Changes: English for International Communication : INTRO Workbook. Cambridge: Cambridge University Press, 1998.