APA引文

Astley, N. &. B. (2003). Happy Birthday Peppa! Ladybird Books.

Chicago Style (17th ed.) Citation

Astley, Neville & Baker. Happy Birthday Peppa! london: Ladybird Books, 2003.

MLA引文

Astley, Neville & Baker. Happy Birthday Peppa! Ladybird Books, 2003.