Cita APA

Santayana, G. 1., & Santayana, G. 1. (1954). The life of reason or the phases of human progress (Ed. 1 v. --.). New York, New York: Scribner.

Citación estilo Chicago

Santayana, George 1863-1952, y George 1863-1952 Santayana. The Life of Reason or the Phases of Human Progress. Ed. 1 v. --. New York, New York: Scribner, 1954.

Cita MLA

Santayana, George 1863-1952, y George 1863-1952 Santayana. The Life of Reason or the Phases of Human Progress. Ed. 1 v. --. New York, New York: Scribner, 1954.