Sexton-Radek, Kathy, and A. Tony Chami. “Pain Clinic Referral to Psychological Services Best Addressed With Collaboration”. Health Psychology Research 1, no. 3 (September 23, 2013): e33. Accessed October 18, 2019. https://www.pagepressjournals.org/index.php/hpr/article/view/hpr.2013.e33.