MACKIN, R., & SEIDL, J. (1979). Exercises in english patterns and usage.-- Ed. 2. Oxford University Press.
芝加哥风格引文MACKIN, Ronald, 与 Jennifer SEIDL. Exercises in English Patterns and Usage.-- Ed. 2. Oxford: Oxford University Press, 1979.
MLA引文MACKIN, Ronald, 与 Jennifer SEIDL. Exercises in English Patterns and Usage.-- Ed. 2. Oxford University Press, 1979.
警告：这些引文格式不一定是100％准确.