Kinney, J. (2007). Dairy of a Wimpy Kid: Old School. Penguin Books.
Lua i Stíl Chicago (17ú heag.)Kinney, Jeff. Dairy of a Wimpy Kid: Old School. London: Penguin Books, 2007.
Lua MLA (9ú heag.)Kinney, Jeff. Dairy of a Wimpy Kid: Old School. Penguin Books, 2007.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.