APA引文

Levitt, S. D. (2009). Freakonomics. Harper Collins.

芝加哥风格引文

Levitt, Steven D. Freakonomics. Harper Collins, 2009.

MLA引文

Levitt, Steven D. Freakonomics. Harper Collins, 2009.

警告：这些引文格式不一定是100％准确.