Allen, R. L. (1972). English grammars and English grammar. Scribner.
芝加哥风格引文Allen, Robert Livingston. English Grammars and English Grammar. New York: Scribner, 1972.
MLA引文Allen, Robert Livingston. English Grammars and English Grammar. Scribner, 1972.
警告：这些引文格式不一定是100％准确.