Andrew Littlejohn. (1994). Writing 4. Cambridge: Cambridge University Press.
Trích dẫn kiểu ChicagoAndrew Littlejohn. Writing 4. Cambridge: Cambridge University Press, 1994.
MLA引文Andrew Littlejohn. Writing 4. Cambridge: Cambridge University Press, 1994.
警告：这些引文格式不一定是100％准确.