ALLEN, W. S. (1974). Living english structure: A practice book for foreign students. Longman.
芝加哥风格引文ALLEN, W. Stannard. Living English Structure: A Practice Book for Foreign Students. London: Longman, 1974.
MLA引文ALLEN, W. Stannard. Living English Structure: A Practice Book for Foreign Students. Longman, 1974.
警告：这些引文格式不一定是100％准确.