APA (7th ed.) Citation

Shaffer, F., & Venner, J. (2013). Heart Rate Variability Anatomy and Physiology. Biofeedback, 41(1), 13. https://doi.org/10.5298/1081-5937-41.1.05

Chicago Style (17th ed.) Citation

Shaffer, Fred, and John Venner. "Heart Rate Variability Anatomy and Physiology." Biofeedback 41, no. 1 (2013): 13. https://doi.org/10.5298/1081-5937-41.1.05.

MLA (9th ed.) Citation

Shaffer, Fred, and John Venner. "Heart Rate Variability Anatomy and Physiology." Biofeedback, vol. 41, no. 1, 2013, p. 13, https://doi.org/10.5298/1081-5937-41.1.05.

Warning: These citations may not always be 100% accurate.