APA (7th ed.) Citation

Gernot Ernst. (2017). Hidden Signals-The History and Methods of Heart Rate Variability. Frontiers Media S.A..

Chicago Style (17th ed.) Citation

Gernot Ernst. Hidden Signals-The History and Methods of Heart Rate Variability. Frontiers Media S.A., 2017.

MLA (9th ed.) Citation

Gernot Ernst. Hidden Signals-The History and Methods of Heart Rate Variability. Frontiers Media S.A., 2017.

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