Zucker, T. L., Samuelson, K. W., Muench, F., Greenberg, M. A., & Gevirtz, R. N. (2009). The Effects of Respiratory Sinus Arrhythmia Biofeedback on Heart Rate Variability and Posttraumatic Stress Disorder Symptoms: A Pilot Study. Applied Psychophysiology & Biofeedback, 34(2), 135. https://doi.org/10.1007/s10484-009-9085-2
Chicago Style (17th ed.) CitationZucker, Terri L., Kristin W. Samuelson, Frederick Muench, Melanie A. Greenberg, and Richard N. Gevirtz. "The Effects of Respiratory Sinus Arrhythmia Biofeedback on Heart Rate Variability and Posttraumatic Stress Disorder Symptoms: A Pilot Study." Applied Psychophysiology & Biofeedback 34, no. 2 (2009): 135. https://doi.org/10.1007/s10484-009-9085-2.
MLA (9th ed.) CitationZucker, Terri L., et al. "The Effects of Respiratory Sinus Arrhythmia Biofeedback on Heart Rate Variability and Posttraumatic Stress Disorder Symptoms: A Pilot Study." Applied Psychophysiology & Biofeedback, vol. 34, no. 2, 2009, p. 135, https://doi.org/10.1007/s10484-009-9085-2.