APA (7th ed.) Citation

Duncan, N. (2008). Christmas Eve at Swamp's End. Project Gutenberg.

Chicago Style (17th ed.) Citation

Duncan, Norman. Christmas Eve at Swamp's End. Project Gutenberg, 2008.

MLA (9th ed.) Citation

Duncan, Norman. Christmas Eve at Swamp's End. Project Gutenberg, 2008.

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