APA (7th ed.) Citation

Blackwood, A. (2004). The Extra Day. Project Gutenberg.

Chicago Style (17th ed.) Citation

Blackwood, Algernon. The Extra Day. Project Gutenberg, 2004.

MLA (9th ed.) Citation

Blackwood, Algernon. The Extra Day. Project Gutenberg, 2004.

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