APA (7th ed.) Citation

Walker, M. P. (2018). Why we sleep : the new science of sleep and dreams / Matthew Walker: The new science of sleep and dreams. Penguin Books.

Chicago Style (17th ed.) Citation

Walker, Matthew P. Why We Sleep : The New Science of Sleep and Dreams / Matthew Walker: The New Science of Sleep and Dreams. UK: Penguin Books, 2018.

MLA (9th ed.) Citation

Walker, Matthew P. Why We Sleep : The New Science of Sleep and Dreams / Matthew Walker: The New Science of Sleep and Dreams. Penguin Books, 2018.

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