APA (7th ed.) Citation

Davison, C. (2008). A Study of Recent Earthquakes. Project Gutenberg.

Chicago Style (17th ed.) Citation

Davison, Charles. A Study of Recent Earthquakes. Project Gutenberg, 2008.

MLA (9th ed.) Citation

Davison, Charles. A Study of Recent Earthquakes. Project Gutenberg, 2008.

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