Thieme, K., and D.C. Turk. “Cognitive-Behavioral and Operant-Behavioral Therapy for People With Fibromyalgia”. Reumatismo 64, no. 4 (September 28, 2012): 275–285. Accessed April 18, 2024. https://www.reumatismo.org/reuma/article/view/reumatismo.2012.275.