APA (7th ed.) Citation

Raphael, R. (2007). A Filbert Is a Nut. Project Gutenberg.

Chicago Style (17th ed.) Citation

Raphael, Rick. A Filbert Is a Nut. Project Gutenberg, 2007.

MLA (9th ed.) Citation

Raphael, Rick. A Filbert Is a Nut. Project Gutenberg, 2007.

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