APA (7th ed.) Citation

Santayana, G. (1922). The life of reason: Or, The phases of human progress, by George Santayana (2d ed.). C. Scribner's sons.

Chicago Style (17th ed.) Citation

Santayana, George. The Life of Reason: Or, The Phases of Human Progress, by George Santayana. 2d ed. New York: C. Scribner's sons, 1922.

MLA (9th ed.) Citation

Santayana, George. The Life of Reason: Or, The Phases of Human Progress, by George Santayana. 2d ed. C. Scribner's sons, 1922.