APA (7th ed.) Citation

Mugford, S., & Green, D. (2020). Sterling rules. Welbeck Children's Books.

Chicago Style (17th ed.) Citation

Mugford, Simon, and Dan Green. Sterling Rules. London: Welbeck Children's Books, 2020.

MLA (8th ed.) Citation

Mugford, Simon, and Dan Green. Sterling Rules. Welbeck Children's Books, 2020.