APA (7th ed.) Citation

Penniman, J. H. (2007). Children and Their Books. Project Gutenberg.

Chicago Style (17th ed.) Citation

Penniman, James Hosmer. Children and Their Books. Project Gutenberg, 2007.

MLA (9th ed.) Citation

Penniman, James Hosmer. Children and Their Books. Project Gutenberg, 2007.

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