Prokopowicz, A.;                     Sobczak, A.;                     Szdzuj, J.;                     Grygoyć, K.;                     Kośmider, L.    
        Metal Concentration Assessment in the Urine of Cigarette Smokers Who Switched to Electronic Cigarettes: A Pilot Study. Int. J. Environ. Res. Public Health 2020, 17, 1877.
    https://doi.org/10.3390/ijerph17061877
    AMA Style
    
                                Prokopowicz A,                                 Sobczak A,                                 Szdzuj J,                                 Grygoyć K,                                 Kośmider L.        
                Metal Concentration Assessment in the Urine of Cigarette Smokers Who Switched to Electronic Cigarettes: A Pilot Study. International Journal of Environmental Research and Public Health. 2020; 17(6):1877.
        https://doi.org/10.3390/ijerph17061877
    
    Chicago/Turabian Style
    
                                Prokopowicz, Adam,                                 Andrzej Sobczak,                                 Jerzy Szdzuj,                                 Katarzyna Grygoyć,                                 and Leon Kośmider.        
                2020. "Metal Concentration Assessment in the Urine of Cigarette Smokers Who Switched to Electronic Cigarettes: A Pilot Study" International Journal of Environmental Research and Public Health 17, no. 6: 1877.
        https://doi.org/10.3390/ijerph17061877
    
    APA Style
    
                                Prokopowicz, A.,                                 Sobczak, A.,                                 Szdzuj, J.,                                 Grygoyć, K.,                                 & Kośmider, L.        
        
        (2020). Metal Concentration Assessment in the Urine of Cigarette Smokers Who Switched to Electronic Cigarettes: A Pilot Study. International Journal of Environmental Research and Public Health, 17(6), 1877.
        https://doi.org/10.3390/ijerph17061877