APA Edition Citation

Sharp, . T. J. (2001). The good sleep guide: 10 steps to better sleep and how to break the worry cycle. Penguin.

Chicago Edition Citation

Sharp, Timothy J. The Good Sleep Guide: 10 Steps to Better Sleep and How to Break the Worry Cycle. Ringwood, Vic. ; Harmondsworth: Penguin, 2001.

MLA Edition Citation

Sharp, Timothy J. The Good Sleep Guide: 10 Steps to Better Sleep and How to Break the Worry Cycle. Penguin, 2001.