APA (7th ed.) Citation

Leighton, J., Dalziel, E., & Dalziel, G. (2007). Christmas Comes but Once A Year Showing What Mr. Brown Did, Thought, and Intended to Do, during that Festive Season. Project Gutenberg.

Chicago Style (17th ed.) Citation

Leighton, John, Edward Dalziel, and George Dalziel. Christmas Comes but Once A Year Showing What Mr. Brown Did, Thought, and Intended to Do, During That Festive Season. Project Gutenberg, 2007.

MLA (9th ed.) Citation

Leighton, John, et al. Christmas Comes but Once A Year Showing What Mr. Brown Did, Thought, and Intended to Do, During That Festive Season. Project Gutenberg, 2007.

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