APA (7th ed.) Citation

Mill, J. S., Bentham, J., & Ryan, A. (2004). Utilitarianism and other essays. Penguin.

Chicago Style (17th ed.) Citation

Mill, John Stuart, Jeremy Bentham, and Alan Ryan. Utilitarianism and Other Essays. London: Penguin, 2004.

MLA (9th ed.) Citation

Mill, John Stuart, et al. Utilitarianism and Other Essays. Penguin, 2004.