Spack, R. (2012). 14th ed. Cambridge: Cambridge University Press.
Trích dẫn kiểu ChicagoSpack, Ruth. 14th Ed. Cambridge: Cambridge University Press, 2012.
MLA引文Spack, Ruth. 14th Ed. Cambridge: Cambridge University Press, 2012.
警告：这些引文格式不一定是100％准确.
APA引文