Cita APA (7th ed.)

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

Cita Chicago (17th ed.)

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

Cita MLA (8th ed.)

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