APA (7th ed.) Citation

Rudd, J., Johnson, R., & Horne, C. F. (2010). The Great Events by Famous Historians, Volume 14. Project Gutenberg.

Chicago Style (17th ed.) Citation

Rudd, John, Rossiter Johnson, and Charles F. Horne. The Great Events by Famous Historians, Volume 14. Project Gutenberg, 2010.

MLA (9th ed.) Citation

Rudd, John, et al. The Great Events by Famous Historians, Volume 14. Project Gutenberg, 2010.

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