APA (7th ed.) Citation

Anne Fine & Kate Aldous. (1998). Loudmouth Louis. Penguin Books Ltd.

Chicago Style (17th ed.) Citation

Anne Fine and Kate Aldous. Loudmouth Louis. England: Penguin Books Ltd, 1998.

MLA (9th ed.) Citation

Anne Fine and Kate Aldous. Loudmouth Louis. Penguin Books Ltd, 1998.