Society of Behavioral Sleep Medicine
https://behavioralsleep.org/ 

Cognitive Behavioral Treatment of Insomnia: A Session-by-Session Guide 1st ed. 2005. 2nd printing 2008 Edition
by Michael L. Perlis,‎ Carla Jungquist,‎ Michael T. Smith,‎ Donn Posner
https://www.amazon.com/Cognitive-Behavioral-Treatment-Insomnia-Session/dp/0387774408

Overcoming Insomnia: A Cognitive-Behavioral Therapy Approach, Workbook (Treatments That Work) 2nd Edition
by Jack D. Edinger,‎ Colleen E. Carney
https://www.amazon.com/Overcoming-Insomnia-Cognitive-Behavioral-Approach-Treatments/dp/0199339406/