APA引文

Asimov, I. (2016). Foundation and empire (NA.). Harper Voyager.

芝加哥风格引文

Asimov, Isaac. Foundation and Empire. NA. London: Harper Voyager, 2016.

MLA引文

Asimov, Isaac. Foundation and Empire. NA. Harper Voyager, 2016.

警告：这些引文格式不一定是100％准确.