Mill, J. S., Bentham, J., & Ryan, A. (1987). Utilitarianism and other essays. Penguin Books.

Mill, John Stuart, Jeremy Bentham, and Alan Ryan. Utilitarianism and Other Essays. Harmondsworth, Middlesex, England ; New York,: Penguin Books, 1987.

Mill, John Stuart, et al. Utilitarianism and Other Essays. Penguin Books, 1987.