APA (7th ed.) Citation

Crompton, R. (2009). William again. Macmillan Children's Books Publishers.

Chicago Style (17th ed.) Citation

Crompton, Richmal. William Again. London: Macmillan Children's Books Publishers, 2009.

MLA (9th ed.) Citation

Crompton, Richmal. William Again. Macmillan Children's Books Publishers, 2009.

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