APA (7th ed.) Citation

Kody Keplinger. (2015). The Duff. Hodder Children's Books.

Chicago Style (17th ed.) Citation

Kody Keplinger. The Duff. London: Hodder Children's Books, 2015.

MLA (9th ed.) Citation

Kody Keplinger. The Duff. Hodder Children's Books, 2015.

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