Gray, J. (1996). Mill on liberty: A defence (2nd ed.). Routledge & K. Paul.
芝加哥风格引文Gray, John. Mill on Liberty: A Defence. 2nd ed. London ; New York: Routledge & K. Paul, 1996.
MLA引文Gray, John. Mill on Liberty: A Defence. 2nd ed. Routledge & K. Paul, 1996.
警告：这些引文格式不一定是100％准确.