APA (7th ed.) Citation

Dahl, R., & Blake, Q. (2017). George's marvellous medicine. Puffin Books.

Chicago Style (17th ed.) Citation

Dahl, Roald, and Quentin Blake. George's Marvellous Medicine. United Kingdom: Puffin Books, 2017.

MLA (9th ed.) Citation

Dahl, Roald, and Quentin Blake. George's Marvellous Medicine. Puffin Books, 2017.