APA (7th ed.) Citation

Llewellyn, C. Say the sound o. Ladybird Books.

Chicago Style (17th ed.) Citation

Llewellyn, Claire. Say the Sound O. London: Ladybird Books.

MLA (9th ed.) Citation

Llewellyn, Claire. Say the Sound O. Ladybird Books.

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