APA استشهاد

Murphy,, R. (2007). Essential grammar in use (3.). Cambridge University Press.

استشهاد بنمط شيكاغو

Murphy,, Raymond. Essential Grammar in Use. 3. New York: Cambridge University Press, 2007.

MLA استشهاد

Murphy,, Raymond. Essential Grammar in Use. 3. Cambridge University Press, 2007.