APA (7th ed.) Citation

Adams, S. H. (2004). The Unspeakable Perk. Project Gutenberg.

Chicago Style (17th ed.) Citation

Adams, Samuel Hopkins. The Unspeakable Perk. Project Gutenberg, 2004.

MLA (9th ed.) Citation

Adams, Samuel Hopkins. The Unspeakable Perk. Project Gutenberg, 2004.

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