The Sleep Parent Training (SLePT) Program was developed for young children with autism spectrum disorder and co-occurring sleep disturbances and tested in clinical trials. The manual is based on behavioral analytic principles and covers approaches to address bedtime challenges, delayed sleep onset, night wakings, sleep association problems, and early morning wakings. The manualized intervention includes a therapist guide and a parent workbook. While manualized, the intervention is designed to allow for personalized tailoring based on the child's age and skills and parent preferences. This Workbook moves through the program session by session, and includes helpful activity sheets, handouts and forms, designed to track progress. Using the exercises therapists and parents can learn about the causes of sleep disturbances and strategies to address common behavioral sleep problems experienced by autistic children, allowing them to improve their child's sleep.