A variety of professions intersect with behavior analysis. This page links to resources enumerating guidelines and evidence-based practices for a variety of populations and clinical presentations.
For individuals working in mental and behavioral health the American Psychological Association has both general guidelines for practice (e.g., for women and girls, men and boys, transgender and gender nonconforming people, older adults, multicultural practice, persons with disabilities) and clinical practice guidelines (e.g., PTSD, overweight children, depression).
The National Association of School Psychologists publishes a four-volume set on Best Practices in School Psychology.
Know of a link to a specific guideline that is missing? Let us know.