Stephenson, M.D.;                     Thompson, A.G.;                     Merrigan, J.J.;                     Stone, J.D.;                     Hagen, J.A.    
        Applying Heart Rate Variability to Monitor Health and Performance in Tactical Personnel: A Narrative Review. Int. J. Environ. Res. Public Health 2021, 18, 8143.
    https://doi.org/10.3390/ijerph18158143
    AMA Style
    
                                Stephenson MD,                                 Thompson AG,                                 Merrigan JJ,                                 Stone JD,                                 Hagen JA.        
                Applying Heart Rate Variability to Monitor Health and Performance in Tactical Personnel: A Narrative Review. International Journal of Environmental Research and Public Health. 2021; 18(15):8143.
        https://doi.org/10.3390/ijerph18158143
    
    Chicago/Turabian Style
    
                                Stephenson, Mark D.,                                 Andrew G. Thompson,                                 Justin J. Merrigan,                                 Jason D. Stone,                                 and Joshua A. Hagen.        
                2021. "Applying Heart Rate Variability to Monitor Health and Performance in Tactical Personnel: A Narrative Review" International Journal of Environmental Research and Public Health 18, no. 15: 8143.
        https://doi.org/10.3390/ijerph18158143
    
    APA Style
    
                                Stephenson, M. D.,                                 Thompson, A. G.,                                 Merrigan, J. J.,                                 Stone, J. D.,                                 & Hagen, J. A.        
        
        (2021). Applying Heart Rate Variability to Monitor Health and Performance in Tactical Personnel: A Narrative Review. International Journal of Environmental Research and Public Health, 18(15), 8143.
        https://doi.org/10.3390/ijerph18158143