APA (7th ed.) Citation

Williams, D., & Ross, T. (2016). There's a snake in my school. HarperCollins Children's Books.

Chicago Style (17th ed.) Citation

Williams, David, and Tomy Ross. There's a Snake in My School. London: HarperCollins Children's Books, 2016.

MLA (9th ed.) Citation

Williams, David, and Tomy Ross. There's a Snake in My School. HarperCollins Children's Books, 2016.