Paul Roberts. (1999). Cambridge first certificate: Reading. Cambridge, UK: Cambridge Unversity Press.
Trích dẫn kiểu ChicagoPaul Roberts. Cambridge First Certificate: Reading. Cambridge, UK: Cambridge Unversity Press, 1999.
MLA引文Paul Roberts. Cambridge First Certificate: Reading. Cambridge, UK: Cambridge Unversity Press, 1999.
警告：這些引文格式不一定是100％准確.