APA引文

(2007). Nation's Report Card: Civics 2006. U.S. Department of Education.

芝加哥风格引文

Nation's Report Card: Civics 2006. U.S. Department of Education, 2007.

MLA引文

Nation's Report Card: Civics 2006. U.S. Department of Education, 2007.

警告：这些引文格式不一定是100％准确.