APA (7th ed.) Citation

Chambers, G. F. (2008). The Story of Eclipses. Project Gutenberg.

Chicago Style (17th ed.) Citation

Chambers, George F. The Story of Eclipses. Project Gutenberg, 2008.

MLA (9th ed.) Citation

Chambers, George F. The Story of Eclipses. Project Gutenberg, 2008.

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