APA (7th ed.) Citation

Chamberlin, J. E. (2010). The Ifs of History. Project Gutenberg.

Chicago Style (17th ed.) Citation

Chamberlin, Joseph Edgar. The Ifs of History. Project Gutenberg, 2010.

MLA (9th ed.) Citation

Chamberlin, Joseph Edgar. The Ifs of History. Project Gutenberg, 2010.

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