Cita APA (7a ed.)

Santayana, G. (1968). The birth of reason & other essays. Columbia University Press.

Cita Chicago Style (17a ed.)

Santayana, George. The Birth of Reason & Other Essays. New York [etc.]: Columbia University Press, 1968.

Cita MLA (9a ed.)

Santayana, George. The Birth of Reason & Other Essays. Columbia University Press, 1968.