APA (7th ed.) Citation

Balfour, A. J. (1915). Theism and humanism. The Gifford lectures.

Chicago Style (17th ed.) Citation

Balfour, Arthur James. "Theism and Humanism." The Gifford Lectures 1915.

MLA (9th ed.) Citation

Balfour, Arthur James. "Theism and Humanism." The Gifford Lectures, 1915.

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