APA (7th ed.) Citation

Otis, J. (2014). The Boy Spies of Philadelphia The Story of How the Young Spies Helped the Continental Army at Valley Forge. Project Gutenberg.

Chicago Style (17th ed.) Citation

Otis, James. The Boy Spies of Philadelphia The Story of How the Young Spies Helped the Continental Army at Valley Forge. Project Gutenberg, 2014.

MLA (9th ed.) Citation

Otis, James. The Boy Spies of Philadelphia The Story of How the Young Spies Helped the Continental Army at Valley Forge. Project Gutenberg, 2014.

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