Richards, J. C. (1991). Interchange: English for international communication : Teacher's manual. New York, US: Cambridge University Press.
استشهاد بنمط شيكاغوRichards, Jack C. Interchange: English for International Communication : Teacher's Manual. New York, US: Cambridge University Press, 1991.
MLA استشهادRichards, Jack C. Interchange: English for International Communication : Teacher's Manual. New York, US: Cambridge University Press, 1991.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.