APA (7th ed.) Citation

Douglas, A., & P. P. (2014). The Placid Pug and Other Rhymes. Project Gutenberg.

Chicago Style (17th ed.) Citation

Douglas, Alfred, and P. P. The Placid Pug and Other Rhymes. Project Gutenberg, 2014.

MLA (9th ed.) Citation

Douglas, Alfred, and P. P. The Placid Pug and Other Rhymes. Project Gutenberg, 2014.

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