APA (7th ed.) Citation

Davidson, S., & Postgate, D. (2006). The ugly duckling. Usborne Publishing Ltd.

Chicago Style (17th ed.) Citation

Davidson, Susanna, and Daniel Postgate. The Ugly Duckling. England: Usborne Publishing Ltd, 2006.

MLA (9th ed.) Citation

Davidson, Susanna, and Daniel Postgate. The Ugly Duckling. Usborne Publishing Ltd, 2006.

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