(2010). Cambridge first certificate in english 4 with answers: Official examination papers from University of Cambridge ESOL examinations. Cambridge University Press.
芝加哥风格引文Cambridge First Certificate in English 4 with Answers: Official Examination Papers from University of Cambridge ESOL Examinations. Cambridge: Cambridge University Press, 2010.
MLA引文Cambridge First Certificate in English 4 with Answers: Official Examination Papers from University of Cambridge ESOL Examinations. Cambridge University Press, 2010.
警告：这些引文格式不一定是100％准确.