APA引文

Velm, G. (2013). Wiley AP U.S. history. John Wiley and Sons.

芝加哥风格引文

Velm, Greg. Wiley AP U.S. History. Indianapolis, Ind.: John Wiley and Sons, 2013.

MLA引文

Velm, Greg. Wiley AP U.S. History. John Wiley and Sons, 2013.

警告：这些引文格式不一定是100％准确.