Richards, J. C., Hull, J., & Proctor, S. (1994). Changes: English for international communication : teacher's book 1. Cambridge: Cambridge University Press.
Chicago-stil citatRichards, Jack C., Jonathan Hull, och Susan Proctor. Changes: English for International Communication : Teacher's Book 1. Cambridge: Cambridge University Press, 1994.
MLA-referensRichards, Jack C., Jonathan Hull, och Susan Proctor. Changes: English for International Communication : Teacher's Book 1. Cambridge: Cambridge University Press, 1994.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.