Richards, J. C., Hull, J., & Proctor, S. (1998). New interchange: English for international communication : student's book (New ed.). Cambridge, U.K. ; New York, NY, USA: Cambridge University Press.
استشهاد بنمط شيكاغوRichards, Jack C., Jonathan Hull, و Susan Proctor. New Interchange: English for International Communication : Student's Book. New ed. Cambridge, U.K. ; New York, NY, USA: Cambridge University Press, 1998.
MLA استشهادRichards, Jack C., Jonathan Hull, و Susan Proctor. New Interchange: English for International Communication : Student's Book. New ed. Cambridge, U.K. ; New York, NY, USA: Cambridge University Press, 1998.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.