APA (7th ed.) Citation

Crompton, R., & Henry, T. (2010). Just William. Project Gutenberg.

Chicago Style (17th ed.) Citation

Crompton, Richmal, and Thomas Henry. Just William. Project Gutenberg, 2010.

MLA (9th ed.) Citation

Crompton, Richmal, and Thomas Henry. Just William. Project Gutenberg, 2010.

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