APA (7th ed.) Citation

Lewis, C. S. (2007). Spirits in Bondage. Project Gutenberg.

Chicago Style (17th ed.) Citation

Lewis, C. S. Spirits in Bondage. Project Gutenberg, 2007.

MLA (9th ed.) Citation

Lewis, C. S. Spirits in Bondage. Project Gutenberg, 2007.

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