APA (7th ed.) Citation

Williston, T., Baldwin, A. C., & Thurston, R. B. (2010). Three Prize Essays on American Slavery. Project Gutenberg.

Chicago Style (17th ed.) Citation

Williston, Timothy, A. C. Baldwin, and R. B. Thurston. Three Prize Essays on American Slavery. Project Gutenberg, 2010.

MLA (9th ed.) Citation

Williston, Timothy, et al. Three Prize Essays on American Slavery. Project Gutenberg, 2010.

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