Richards, J. C., Hull, J., & Proctor, S. (1998). New interchange 2: English for international communication : workbook. Cambridge: Cambridge University Press.
استشهاد بنمط شيكاغوRichards, Jack C., Jonathan Hull, و Susan Proctor. New Interchange 2: English for International Communication : Workbook. Cambridge: Cambridge University Press, 1998.
MLA استشهادRichards, Jack C., Jonathan Hull, و Susan Proctor. New Interchange 2: English for International Communication : Workbook. Cambridge: Cambridge University Press, 1998.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.