APA (7th ed.) Citation

Thomas, H., & Thomas, D. L. (1947). Living biographies of great philosophers. Halcyon House.

Chicago Style (17th ed.) Citation

Thomas, Henry, and Dana Lee Thomas. Living Biographies of Great Philosophers. Halcyon House, 1947.

MLA (8th ed.) Citation

Thomas, Henry, and Dana Lee Thomas. Living Biographies of Great Philosophers. Halcyon House, 1947.

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