APA (7th ed.) Citation

Tourtel, M. (2007). A Horse Book. Project Gutenberg.

Chicago Style (17th ed.) Citation

Tourtel, Mary. A Horse Book. Project Gutenberg, 2007.

MLA (9th ed.) Citation

Tourtel, Mary. A Horse Book. Project Gutenberg, 2007.

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