APA (7th ed.) Citation

Kinney, J. (2007). Greg Heffley's journal: [a novel in cartoons]. Amulet Books.

Chicago Style (17th ed.) Citation

Kinney, Jeff. Greg Heffley's Journal: [a Novel in Cartoons]. New York: Amulet Books, 2007.

MLA (9th ed.) Citation

Kinney, Jeff. Greg Heffley's Journal: [a Novel in Cartoons]. Amulet Books, 2007.