APA (7th ed.) Citation

Cupples, G. (2007). The Cockatoo's Story. Project Gutenberg.

Chicago Style (17th ed.) Citation

Cupples, George. The Cockatoo's Story. Project Gutenberg, 2007.

MLA (9th ed.) Citation

Cupples, George. The Cockatoo's Story. Project Gutenberg, 2007.

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