APA (7th ed.) Citation

Hartley, D., & Kirby-Parrish, L. (2010). All About the Three Little Pigs. Project Gutenberg.

Chicago Style (17th ed.) Citation

Hartley, Dick, and L. Kirby-Parrish. All About the Three Little Pigs. Project Gutenberg, 2010.

MLA (9th ed.) Citation

Hartley, Dick, and L. Kirby-Parrish. All About the Three Little Pigs. Project Gutenberg, 2010.

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