APA (7th ed.) Citation

Lamartine, A. d., Hale, E. E., & Le Baron, F. (2008). Atheism Among the People. Project Gutenberg.

Chicago Style (17th ed.) Citation

Lamartine, Alphonse de, Edward Everett Hale, and Francis Le Baron. Atheism Among the People. Project Gutenberg, 2008.

MLA (9th ed.) Citation

Lamartine, Alphonse de, et al. Atheism Among the People. Project Gutenberg, 2008.

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