APA (7th ed.) Citation

Butler, E. P. (2013). That Pup. Project Gutenberg.

Chicago Style (17th ed.) Citation

Butler, Ellis Parker. That Pup. Project Gutenberg, 2013.

MLA (9th ed.) Citation

Butler, Ellis Parker. That Pup. Project Gutenberg, 2013.

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