APA (7th ed.) Citation

Sarah Ockwell-Smith. (2015). The gentle sleep book: A guide for calm babies, toddlers and pre-schoolers. Piatkus.

Chicago Style (17th ed.) Citation

Sarah Ockwell-Smith. The Gentle Sleep Book: A Guide for Calm Babies, Toddlers and Pre-schoolers. London: Piatkus, 2015.

MLA (9th ed.) Citation

Sarah Ockwell-Smith. The Gentle Sleep Book: A Guide for Calm Babies, Toddlers and Pre-schoolers. Piatkus, 2015.

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