Cita APA (7th ed.)

Astley, N. a. B. (2003). Peppa Pig: Best Friends. Penguin Random House Children.

Cita Chicago (17th ed.)

Astley, Neville and Baker. Peppa Pig: Best Friends. United Kingdom: Penguin Random House Children, 2003.

Cita MLA (8th ed.)

Astley, Neville and Baker. Peppa Pig: Best Friends. Penguin Random House Children, 2003.