APA (7th ed.) Citation

Thomson, J. A. K. (1955). The ethics of Aristotle. Penguin Books.

Chicago Style (17th ed.) Citation

Thomson, J. A. K. The Ethics of Aristotle. Baltimore: Penguin Books, 1955.

MLA (9th ed.) Citation

Thomson, J. A. K. The Ethics of Aristotle. Penguin Books, 1955.