Santayana, G., & Coleman, M. A. (2009). The essential Santayana: Selected writings. Indiana University Press.
芝加哥风格引文Santayana, George, 与 Martin A. Coleman. The Essential Santayana: Selected Writings. Bloomington: Indiana University Press, 2009.
MLA引文Santayana, George, 与 Martin A. Coleman. The Essential Santayana: Selected Writings. Indiana University Press, 2009.
警告：这些引文格式不一定是100％准确.