Thomson, A. (1962). A practical english grammar exercises-3 Vol 3. O.U.P.
芝加哥风格引文Thomson, A. A Practical English Grammar Exercises-3 Vol 3. London: O.U.P, 1962.
MLA引文Thomson, A. A Practical English Grammar Exercises-3 Vol 3. O.U.P, 1962.
警告：这些引文格式不一定是100％准确.