APA (7th ed.) Citation

Ingersoll, R. G., & Widger, D. (2012). The Works of Robert G. Ingersoll, Complete Contents Dresden Edition-Twelve Volumes. Project Gutenberg.

Chicago Style (17th ed.) Citation

Ingersoll, Robert Green, and David Widger. The Works of Robert G. Ingersoll, Complete Contents Dresden Edition-Twelve Volumes. Project Gutenberg, 2012.

MLA (9th ed.) Citation

Ingersoll, Robert Green, and David Widger. The Works of Robert G. Ingersoll, Complete Contents Dresden Edition-Twelve Volumes. Project Gutenberg, 2012.

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