APA (7th ed.) Citation

Skorupski, J. (1991). John Stuart Mill ([1st pub.].). Routledge.

Chicago Style (17th ed.) Citation

Skorupski, John. John Stuart Mill. [1st pub.]. London [etc.]: Routledge, 1991.

MLA (9th ed.) Citation

Skorupski, John. John Stuart Mill. [1st pub.]. Routledge, 1991.