APA (7th ed.) Citation

Petula Stone. (1993). The ugly duckling ; illustrated by Petula Stone. Ladybird Books LTD.

Chicago Style (17th ed.) Citation

Petula Stone. The Ugly Duckling ; Illustrated by Petula Stone. USA: Ladybird Books LTD, 1993.

MLA (9th ed.) Citation

Petula Stone. The Ugly Duckling ; Illustrated by Petula Stone. Ladybird Books LTD, 1993.

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