APA (7th ed.) Citation

Burns, E. E. (2011). The Story of Great Inventions. Project Gutenberg.

Chicago Style (17th ed.) Citation

Burns, Elmer Ellsworth. The Story of Great Inventions. Project Gutenberg, 2011.

MLA (9th ed.) Citation

Burns, Elmer Ellsworth. The Story of Great Inventions. Project Gutenberg, 2011.

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