Cambridge University. (2013). Cambridge Certificate in Advanced English 1 with answers. United Kingdom: Cambridge university Press.
استشهاد بنمط شيكاغوCambridge University. Cambridge Certificate in Advanced English 1 With Answers. United Kingdom: Cambridge university Press, 2013.
MLA استشهادCambridge University. Cambridge Certificate in Advanced English 1 With Answers. United Kingdom: Cambridge university Press, 2013.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.