APA (7th ed.) Citation

Santayana, G. Three Philosophical Poets: Lucretius, Dante, and Goethe.

Chicago Style (17th ed.) Citation

Santayana, George. Three Philosophical Poets: Lucretius, Dante, and Goethe.

MLA (9th ed.) Citation

Santayana, George. Three Philosophical Poets: Lucretius, Dante, and Goethe.

Warning: These citations may not always be 100% accurate.