Swan, M., & Baker, D. (2008). Grammar scan answer key (Third edition.). Oxford University Press.
芝加哥风格引文Swan, Michael, 与 David Baker. Grammar Scan Answer Key. Third edition. New York: Oxford University Press, 2008.
MLA引文Swan, Michael, 与 David Baker. Grammar Scan Answer Key. Third edition. Oxford University Press, 2008.
警告：这些引文格式不一定是100％准确.