Widdowson, H. G. (2003). Linguistics. Oxford: Oxford University Press.
Trích dẫn kiểu ChicagoWiddowson, H. G. Linguistics. Oxford: Oxford University Press, 2003.
MLA引文Widdowson, H. G. Linguistics. Oxford: Oxford University Press, 2003.
警告：这些引文格式不一定是100％准确.