Astley, N. a. B. (2003). Peppa Pig: Best Friends. Penguin Random House Children.
Chicagoスタイル(17版)引用形式Astley, Neville and Baker. Peppa Pig: Best Friends. United Kingdom: Penguin Random House Children, 2003.
MLA(8版)引用形式Astley, Neville and Baker. Peppa Pig: Best Friends. Penguin Random House Children, 2003.
警告: この引用は必ずしも正確ではありません.