APA (7th ed.) Citation

Ernst, G. (2014). Heart Rate Variability. Springer London. https://doi.org/10.1007/978-1-4471-4309-3

Chicago Style (17th ed.) Citation

Ernst, Gernot. Heart Rate Variability. London: Springer London, 2014. https://doi.org/10.1007/978-1-4471-4309-3.

MLA (9th ed.) Citation

Ernst, Gernot. Heart Rate Variability. Springer London, 2014. https://doi.org/10.1007/978-1-4471-4309-3.