Orr, L. (1990). Censorship: Opposing viewpoints. Greenhaven Press.
芝加哥风格引文Orr, Lisa. Censorship: Opposing Viewpoints. San Diego, CA: Greenhaven Press, 1990.
MLA引文Orr, Lisa. Censorship: Opposing Viewpoints. Greenhaven Press, 1990.
警告：这些引文格式不一定是100％准确.