APA (7th ed.) Citation

Santayana, G. (2002). The letters of George Santayana, Book 2, 1910-1920. MIT Press.

Chicago Style (17th ed.) Citation

Santayana, George. The Letters of George Santayana, Book 2, 1910-1920. Cambridge, MA: MIT Press, 2002.

MLA (9th ed.) Citation

Santayana, George. The Letters of George Santayana, Book 2, 1910-1920. MIT Press, 2002.