APA (7th ed.) Citation

Keynes, J. M. (1962). A treatise on probability. Harper & Row.

Chicago Style (17th ed.) Citation

Keynes, John Maynard. A Treatise on Probability. New York, NY: Harper & Row, 1962.

MLA (9th ed.) Citation

Keynes, John Maynard. A Treatise on Probability. Harper & Row, 1962.