APA引文

HarperCollins. (1991). Collins COBUILD English guides. 1, Prepositions. HarperCollins.

芝加哥风格引文

HarperCollins. Collins COBUILD English Guides. 1, Prepositions. London: HarperCollins, 1991.

MLA引文

HarperCollins. Collins COBUILD English Guides. 1, Prepositions. HarperCollins, 1991.

警告：这些引文格式不一定是100％准确.