Richards, J. C., Hull, J., & Proctor, S. (1995). Changes: English for international communication. Cambridge: Cambridge University Press.
Trích dẫn kiểu ChicagoRichards, Jack C., Jonathan Hull, và Susan Proctor. Changes: English for International Communication. Cambridge: Cambridge University Press, 1995.
ציטוט MLARichards, Jack C., Jonathan Hull, và Susan Proctor. Changes: English for International Communication. Cambridge: Cambridge University Press, 1995.
אזהרה: ציטוטים אלה לעיתים לא מדויקים ב 100%.