APA (7th ed.) Citation

Baker, R. S. (2013). Boys' Second Book of Inventions. Project Gutenberg.

Chicago Style (17th ed.) Citation

Baker, Ray Stannard. Boys' Second Book of Inventions. Project Gutenberg, 2013.

MLA (9th ed.) Citation

Baker, Ray Stannard. Boys' Second Book of Inventions. Project Gutenberg, 2013.

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