APA način citiranja (7. izdanje)

Santayana, G. (1953). The life of reason: Or, the phases of human progress (One-volume ed., rev.). Scribner.

Čikaški stil citiranja (17. izdanje)

Santayana, George. The Life of Reason: Or, the Phases of Human Progress. One-volume ed., rev. New York: Scribner, 1953.

MLA način citiranja (9. izdanje)

Santayana, George. The Life of Reason: Or, the Phases of Human Progress. One-volume ed., rev. Scribner, 1953.