APA (7th ed.) Citation

Dahl, R. (2011). Someone like you / Roald Dahl. Penguin Books.

Chicago Style (17th ed.) Citation

Dahl, Roald. Someone like You / Roald Dahl. London: Penguin Books, 2011.

MLA (9th ed.) Citation

Dahl, Roald. Someone like You / Roald Dahl. Penguin Books, 2011.

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