APA (7th ed.) Citation

Mill, J. S., & Castell, A. (1947). On liberty. Appleton-Century-Crofts.

Chicago Style (17th ed.) Citation

Mill, John Stuart, and Alburey Castell. On Liberty. New York: Appleton-Century-Crofts, 1947.

MLA (9th ed.) Citation

Mill, John Stuart, and Alburey Castell. On Liberty. Appleton-Century-Crofts, 1947.