Astley, N. a. B. (2003). Peppa Pig: Best Friends. Penguin Random House Children.
Čikaški stil citiranja (17. izdanje)Astley, Neville and Baker. Peppa Pig: Best Friends. United Kingdom: Penguin Random House Children, 2003.
MLA način citiranja (8. izdanje)Astley, Neville and Baker. Peppa Pig: Best Friends. Penguin Random House Children, 2003.
Upozorenje: Ovi citati možda nisu uvijek 100% točni.