APA (7th ed.) Citation

Bourne, J. (2004). A Catechism of the Steam Engine. Project Gutenberg.

Chicago Style (17th ed.) Citation

Bourne, John. A Catechism of the Steam Engine. Project Gutenberg, 2004.

MLA (9th ed.) Citation

Bourne, John. A Catechism of the Steam Engine. Project Gutenberg, 2004.

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