Swan, M. (2003). Practical English usage (Fifth impression.). Oxford University Press.
Chicago Style (17th ed.) CitationSwan, Michael. Practical English Usage. Fifth impression. Oxford ; New York: Oxford University Press, 2003.
MLA引文Swan, Michael. Practical English Usage. Fifth impression. Oxford University Press, 2003.
警告:這些引文格式不一定是100%准確.