Mill, J. S., Bentham, J., & Ryan, A. (1987). Utilitarianism and other essays. Penguin Books.
Lua i Stíl Chicago (17ú heag.)Mill, John Stuart, Jeremy Bentham, agus Alan Ryan. Utilitarianism and Other Essays. Harmondsworth, Middlesex, England ; New York,: Penguin Books, 1987.
Lua MLA (8ú heag.)Mill, John Stuart, et al. Utilitarianism and Other Essays. Penguin Books, 1987.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.