APA (7th ed.) Citation

Santayana, G. (1953). The life of reason or: The phases of human progress. Scribner.

Chicago Style (17th ed.) Citation

Santayana, George. The Life of Reason or: The Phases of Human Progress. New York: Scribner, 1953.

MLA (9th ed.) Citation

Santayana, George. The Life of Reason or: The Phases of Human Progress. Scribner, 1953.

Warning: These citations may not always be 100% accurate.