Astley, N. a. B. (2003). Peppa Pig: Best Friends. Penguin Random House Children.
芝加哥风格引文Astley, Neville and Baker. Peppa Pig: Best Friends. United Kingdom: Penguin Random House Children, 2003.
MLA引文Astley, Neville and Baker. Peppa Pig: Best Friends. Penguin Random House Children, 2003.
警告：这些引文格式不一定是100％准确.