Van Puymbroeck, PhD, CTRS, M., and P.-C. Hsieh, MS. “The Influence of Mindfulness-Based Stress Reduction and Walking on the Psychological Well-Being of Female Informal Caregivers: A Pilot Study”. American Journal of Recreation Therapy, vol. 9, no. 1, Jan. 2010, pp. 15-25, doi:10.5055/ajrt.2010.0002.