Cita APA (7a ed.)

Mill, J. S., & Himmelfarb, G. (1974). On liberty. Penguin.

Cita Chicago Style (17a ed.)

Mill, John Stuart, y Gertrude Himmelfarb. On Liberty. Harmondsworth: Penguin, 1974.

Cita MLA (8a ed.)

Mill, John Stuart, y Gertrude Himmelfarb. On Liberty. Penguin, 1974.