APA (7th ed.) Citation

Horne, C. F., Johnson, R., & Rudd, J. (2005). The Great Events by Famous Historians, Volume 01. Project Gutenberg.

Chicago Style (17th ed.) Citation

Horne, Charles F., Rossiter Johnson, and John Rudd. The Great Events by Famous Historians, Volume 01. Project Gutenberg, 2005.

MLA (9th ed.) Citation

Horne, Charles F., et al. The Great Events by Famous Historians, Volume 01. Project Gutenberg, 2005.

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