Polyvagal Resources
DEB DANA - rhythm of regulation
Deb Dana, LCSW - who I discovered while listening to her interview with Justin MFT on Polyvagal Podcast - translates the science of the polyvagal theory (Stephen Porges) into client and clinician-friendly language.
I highly recommend her book, Polyvagal Theory in Therapy: Engaging the Rhythm of Regulation, to clinicians adding polyvagal science to their practice modalities.