APA (7th ed.) Citation

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 (8th ed.) Citation

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

Warning: These citations may not always be 100% accurate.