APA引文

Asimov, I. (1997). The caves of steel. HarperCollins Publishers.

芝加哥风格引文

Asimov, Isaac. The Caves of Steel. London: HarperCollins Publishers, 1997.

MLA引文

Asimov, Isaac. The Caves of Steel. HarperCollins Publishers, 1997.

警告：这些引文格式不一定是100％准确.