What is the recommended treatment for Generalized Anxiety Disorder (GAD)? This is for advanced nursing pharmacology.

I need two professional references, no mayo clinic etc…

American Psychiatric Association. (2013). Diagnostic and statistical manual of mental disorders: DSM-5. (5th Ed.). American Psychiatric Association.
American Psychological Association (2020). Publication manual of the American Psychological Association (7th ed.). American Psychological Association. https://doi.org/10.1037/0000165-000.
Stahl, S. (2021). Stahl’s essential psychopharmacology: Neuroscientific basis and practical application. 5th Ed. Cambridge University Press.
Stahl, S. (2021). The prescriber′s guide: Stahl′s essential psychopharmacology. 7th Ed. Cambridge University Press.
Stern, et al., (2018). Handbook of general hospital psychiatry (7th Ed.). Saunders.
Wheeler, K. (2014). Psychotherapy for the advanced practice psychiatric nurse. Springer Publishing Company, LLC.

these are the books from the class u may use one for a reference