APA (7th ed.) Citation

Katherine Sully. (2009). Penguins can't fly. Alligator Books Ltd.

Chicago Style (17th ed.) Citation

Katherine Sully. Penguins Can't Fly. London: Alligator Books Ltd, 2009.

MLA (9th ed.) Citation

Katherine Sully. Penguins Can't Fly. Alligator Books Ltd, 2009.

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