Desperately Seeking Snoozin‘: The Insomnia Cure from Awake to Zzzzz by
John Wiedman

Insomnia Cures: Sleep Hygiene Practice Makes Permanent by Barry James Krakow.
No More Sleepless Nights” by Peter Hauri and Shirley Linde. There is a
also a separate workbook available.

Sleep Thieves: An Eye-Opening Exploration Into the Science and Mysteries of Sleep, by Dr. Stanley Coren