Thomas, A. (1973). A practical English Grammar- Ex- I to VI. Oxford University Press.
芝加哥风格引文Thomas, A. A Practical English Grammar- Ex- I to VI. London: Oxford University Press, 1973.
MLA引文Thomas, A. A Practical English Grammar- Ex- I to VI. Oxford University Press, 1973.
警告：这些引文格式不一定是100％准确.