APA (7th ed.) Citation

Kinney, J., Title, & Heffley, G. (2021). Rowley Jefferson's awesome friendly adventure. Puffin Books.

Chicago Style (17th ed.) Citation

Kinney, Jeff, Title, and Greg Heffley. Rowley Jefferson's Awesome Friendly Adventure. London: Puffin Books, 2021.

MLA (9th ed.) Citation

Kinney, Jeff, et al. Rowley Jefferson's Awesome Friendly Adventure. Puffin Books, 2021.