APA (7th ed.) Citation

Kingsley, C. (2003). Scientific Essays and Lectures. Project Gutenberg.

Chicago Style (17th ed.) Citation

Kingsley, Charles. Scientific Essays and Lectures. Project Gutenberg, 2003.

MLA (9th ed.) Citation

Kingsley, Charles. Scientific Essays and Lectures. Project Gutenberg, 2003.

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