Richards, J., & Long, M. (1988). Breakthrough: A Course in English Communication Practice. London: Oxford University Press.
استشهاد بنمط شيكاغوRichards, J.C., و M.n Long. Breakthrough: A Course in English Communication Practice. London: Oxford University Press, 1988.
MLA استشهادRichards, J.C., و M.n Long. Breakthrough: A Course in English Communication Practice. London: Oxford University Press, 1988.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.