Dunleavy, G.;                     Bajpai, R.;                     Comiran Tonon, A.;                     Chua, A.P.;                     Cheung, K.L.;                     Soh, C.-K.;                     Christopoulos, G.;                     de Vries, H.;                     Car, J.    
        Examining the Factor Structure of the Pittsburgh Sleep Quality Index in a Multi-Ethnic Working Population in Singapore. Int. J. Environ. Res. Public Health 2019, 16, 4590.
    https://doi.org/10.3390/ijerph16234590
    AMA Style
    
                                Dunleavy G,                                 Bajpai R,                                 Comiran Tonon A,                                 Chua AP,                                 Cheung KL,                                 Soh C-K,                                 Christopoulos G,                                 de Vries H,                                 Car J.        
                Examining the Factor Structure of the Pittsburgh Sleep Quality Index in a Multi-Ethnic Working Population in Singapore. International Journal of Environmental Research and Public Health. 2019; 16(23):4590.
        https://doi.org/10.3390/ijerph16234590
    
    Chicago/Turabian Style
    
                                Dunleavy, Gerard,                                 Ram Bajpai,                                 André Comiran Tonon,                                 Ai Ping Chua,                                 Kei Long Cheung,                                 Chee-Kiong Soh,                                 Georgios Christopoulos,                                 Hein de Vries,                                 and Josip Car.        
                2019. "Examining the Factor Structure of the Pittsburgh Sleep Quality Index in a Multi-Ethnic Working Population in Singapore" International Journal of Environmental Research and Public Health 16, no. 23: 4590.
        https://doi.org/10.3390/ijerph16234590
    
    APA Style
    
                                Dunleavy, G.,                                 Bajpai, R.,                                 Comiran Tonon, A.,                                 Chua, A. P.,                                 Cheung, K. L.,                                 Soh, C.-K.,                                 Christopoulos, G.,                                 de Vries, H.,                                 & Car, J.        
        
        (2019). Examining the Factor Structure of the Pittsburgh Sleep Quality Index in a Multi-Ethnic Working Population in Singapore. International Journal of Environmental Research and Public Health, 16(23), 4590.
        https://doi.org/10.3390/ijerph16234590