Santayana, G. (1955). The sense of beauty. Random House.
Lua i Stíl Chicago (17ú heag.)Santayana, George. The Sense of Beauty. New York: Random House, 1955.
Lua MLA (9ú heag.)Santayana, George. The Sense of Beauty. Random House, 1955.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.