(2010). Cambridge first certificate in english 4 with answers: Official examination papers from University of Cambridge ESOL examinations. Cambridge University Press.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Cambridge First Certificate in English 4 with Answers: Official Examination Papers from University of Cambridge ESOL Examinations. Cambridge: Cambridge University Press, 2010.
توثيق جمعية اللغة المعاصرة MLA (الإصدار التاسع)Cambridge First Certificate in English 4 with Answers: Official Examination Papers from University of Cambridge ESOL Examinations. Cambridge University Press, 2010.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.