Cita APA (7a ed.)

Mill, J. S., & Himmelfarb, G. (1982). On liberty. Penguin Books.

Cita Chicago Style (17a ed.)

Mill, John Stuart, y Gertrude Himmelfarb. On Liberty. Harmondsworth: Penguin Books, 1982.

Cita MLA (9a ed.)

Mill, John Stuart, y Gertrude Himmelfarb. On Liberty. Penguin Books, 1982.