APA (7th ed.) Citation

Brooks, C. S., & Lewis, A. (2006). Journeys to Bagdad. Project Gutenberg.

Chicago Style (17th ed.) Citation

Brooks, Charles S., and Allen Lewis. Journeys to Bagdad. Project Gutenberg, 2006.

MLA (9th ed.) Citation

Brooks, Charles S., and Allen Lewis. Journeys to Bagdad. Project Gutenberg, 2006.

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