APA (7th ed.) Citation

Coolidge, S. (2005). What Katy Did Next. Project Gutenberg.

Chicago Style (17th ed.) Citation

Coolidge, Susan. What Katy Did Next. Project Gutenberg, 2005.

MLA (9th ed.) Citation

Coolidge, Susan. What Katy Did Next. Project Gutenberg, 2005.

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