Cita APA (7th ed.)

Gray, J., Mill, J. S., & Smith, G. W. (1991). J.S. Mill, On liberty in focus. Routledge.

Cita Chicago (17th ed.)

Gray, John, John Stuart Mill, i G. W. Smith. J.S. Mill, On Liberty in Focus. London: Routledge, 1991.

Cita MLA (9th ed.)

Gray, John, et al. J.S. Mill, On Liberty in Focus. Routledge, 1991.