Richards, J. C., Hull, J., & Proctor, S. (1997). New interchange 1: English for international communication : student's book. Cambridge: Cambridge University Press.
استشهاد بنمط شيكاغوRichards, Jack C., Jonathan Hull, و Susan Proctor. New Interchange 1: English for International Communication : Student's Book. Cambridge: Cambridge University Press, 1997.
MLA استشهادRichards, Jack C., Jonathan Hull, و Susan Proctor. New Interchange 1: English for International Communication : Student's Book. Cambridge: Cambridge University Press, 1997.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.