Dahl, O. (1974). Topic and comment, contextual boundness and focus. Buske.
芝加哥风格引文Dahl, Osten. Topic and Comment, Contextual Boundness and Focus. Hamburg: Buske, 1974.
MLA引文Dahl, Osten. Topic and Comment, Contextual Boundness and Focus. Buske, 1974.
警告：这些引文格式不一定是100％准确.