APA (7th ed.) Citation

Jeff Kinney. (2007). Diary of a wimpy kid. Puffin books.

Chicago Style (17th ed.) Citation

Jeff Kinney. Diary of a Wimpy Kid. N.Y: Puffin books, 2007.

MLA (9th ed.) Citation

Jeff Kinney. Diary of a Wimpy Kid. Puffin books, 2007.

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