Cita APA (7a ed.)

Santayana, G. (1944). The background of my life. Charles Scribner's Sons.

Cita Chicago Style (17a ed.)

Santayana, George. The Background of My Life. New York: Charles Scribner's Sons, 1944.

Cita MLA (9a ed.)

Santayana, George. The Background of My Life. Charles Scribner's Sons, 1944.