APA (7th ed.) Citation

Musgrave, H., & Brock, H. M. (2010). A Little Hero. Project Gutenberg.

Chicago Style (17th ed.) Citation

Musgrave, H., and H. M. Brock. A Little Hero. Project Gutenberg, 2010.

MLA (9th ed.) Citation

Musgrave, H., and H. M. Brock. A Little Hero. Project Gutenberg, 2010.

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