APA (7th ed.) Citation

Ernst, G. (2014). Heart rate variability. Springer London.

Chicago Style (17th ed.) Citation

Ernst, Gernot. Heart Rate Variability. London: Springer London, 2014.

MLA (8th ed.) Citation

Ernst, Gernot. Heart Rate Variability. Springer London, 2014.

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