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.
Precaución: Estas citas no son 100% exactas.