Watts, J., Bradlaugh, C., & Collins, A. (2009). Ancient and Modern Celebrated Freethinkers Reprinted From an English Work, Entitled "Half-Hours With The Freethinkers.". Project Gutenberg.
Chicago Style (17th ed.) CitationWatts, John, Charles Bradlaugh, and Anthony Collins. Ancient and Modern Celebrated Freethinkers Reprinted From an English Work, Entitled "Half-Hours With The Freethinkers.". Project Gutenberg, 2009.
MLA (9th ed.) CitationWatts, John, et al. Ancient and Modern Celebrated Freethinkers Reprinted From an English Work, Entitled "Half-Hours With The Freethinkers.". Project Gutenberg, 2009.
Warning: These citations may not always be 100% accurate.