APA (7th ed.) Citation

Hargreaves, A., & Hargreaves, R. (2017). DR. NINTH. BBC Children's Books.

Chicago Style (17th ed.) Citation

Hargreaves, Adam, and Roger Hargreaves. DR. NINTH. London: BBC Children's Books, 2017.

MLA (9th ed.) Citation

Hargreaves, Adam, and Roger Hargreaves. DR. NINTH. BBC Children's Books, 2017.

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