Gairns, R. (2009). Oxford word skills: Advanced. Oxford: Oxford University Press.
Trích dẫn kiểu ChicagoGairns, Ruth. Oxford Word Skills: Advanced. Oxford: Oxford University Press, 2009.
MLA引文Gairns, Ruth. Oxford Word Skills: Advanced. Oxford: Oxford University Press, 2009.
警告：這些引文格式不一定是100％准確.