APA (7th ed.) Citation

Santayana, G. (2002). The letters of George Santayana (Santayana ed.). MIT Press.

Chicago Style (17th ed.) Citation

Santayana, George. The Letters of George Santayana. Santayana ed. Cambridge, Mass.: MIT Press, 2002.

MLA (9th ed.) Citation

Santayana, George. The Letters of George Santayana. Santayana ed. MIT Press, 2002.