a. (2001). Cambridge certificate of proficiency in English (Student's book with answer). Oxford: Cambridge University Press.
استشهاد بنمط شيكاغوa. Cambridge Certificate of Proficiency in English (Student's Book With Answer). Oxford: Cambridge University Press, 2001.
MLA استشهادa. Cambridge Certificate of Proficiency in English (Student's Book With Answer). Oxford: Cambridge University Press, 2001.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.