APA (7th ed.) Citation

Butler, R. (1960). The life and world of George Santayana. H. Regnery.

Chicago Style (17th ed.) Citation

Butler, Richard. The Life and World of George Santayana. Chicago: H. Regnery, 1960.

MLA (9th ed.) Citation

Butler, Richard. The Life and World of George Santayana. H. Regnery, 1960.

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