Aartolahti, E.;                     Eronen, J.;                     Törmäkangas, T.;                     Rantanen, T.;                     Hirvensalo, M.;                     Palmberg, L.;                     Skantz, H.;                     Viljanen, A.;                     Portegijs, E.;                     Iwarsson, S.;     
    et al.    Perceived Opportunities for Physical Activity and Willingness to Be More Active in Older Adults with Different Physical Activity Levels. Int. J. Environ. Res. Public Health 2021, 18, 6146.
    https://doi.org/10.3390/ijerph18116146
    AMA Style
    
                                Aartolahti E,                                 Eronen J,                                 Törmäkangas T,                                 Rantanen T,                                 Hirvensalo M,                                 Palmberg L,                                 Skantz H,                                 Viljanen A,                                 Portegijs E,                                 Iwarsson S,         
        et al.        Perceived Opportunities for Physical Activity and Willingness to Be More Active in Older Adults with Different Physical Activity Levels. International Journal of Environmental Research and Public Health. 2021; 18(11):6146.
        https://doi.org/10.3390/ijerph18116146
    
    Chicago/Turabian Style
    
                                Aartolahti, Eeva,                                 Johanna Eronen,                                 Timo Törmäkangas,                                 Taina Rantanen,                                 Mirja Hirvensalo,                                 Lotta Palmberg,                                 Heidi Skantz,                                 Anne Viljanen,                                 Erja Portegijs,                                 Susanne Iwarsson,         
         and et al.        2021. "Perceived Opportunities for Physical Activity and Willingness to Be More Active in Older Adults with Different Physical Activity Levels" International Journal of Environmental Research and Public Health 18, no. 11: 6146.
        https://doi.org/10.3390/ijerph18116146
    
    APA Style
    
                                Aartolahti, E.,                                 Eronen, J.,                                 Törmäkangas, T.,                                 Rantanen, T.,                                 Hirvensalo, M.,                                 Palmberg, L.,                                 Skantz, H.,                                 Viljanen, A.,                                 Portegijs, E.,                                 Iwarsson, S.,                                 & Rantakokko, M.        
        
        (2021). Perceived Opportunities for Physical Activity and Willingness to Be More Active in Older Adults with Different Physical Activity Levels. International Journal of Environmental Research and Public Health, 18(11), 6146.
        https://doi.org/10.3390/ijerph18116146