APA (7th ed.) Citation

Mark Twain. (2010). Adventures of huckleberry finn. Project Gutenberg.

Chicago Style (17th ed.) Citation

Mark Twain. Adventures of Huckleberry Finn. To be supplied: Project Gutenberg, 2010.

MLA (8th ed.) Citation

Mark Twain. Adventures of Huckleberry Finn. Project Gutenberg, 2010.

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