Chen, Y.;                     Song, G.;                     Yang, F.;                     Zhang, S.;                     Zhang, Y.;                     Liu, Z.    
        Risk Assessment and Hierarchical Risk Management of Enterprises in Chemical Industrial Parks Based on Catastrophe Theory. Int. J. Environ. Res. Public Health 2012, 9, 4386-4402.
    https://doi.org/10.3390/ijerph9124386
    AMA Style
    
                                Chen Y,                                 Song G,                                 Yang F,                                 Zhang S,                                 Zhang Y,                                 Liu Z.        
                Risk Assessment and Hierarchical Risk Management of Enterprises in Chemical Industrial Parks Based on Catastrophe Theory. International Journal of Environmental Research and Public Health. 2012; 9(12):4386-4402.
        https://doi.org/10.3390/ijerph9124386
    
    Chicago/Turabian Style
    
                                Chen, Yu,                                 Guobao Song,                                 Fenglin Yang,                                 Shushen Zhang,                                 Yun Zhang,                                 and Zhenyu Liu.        
                2012. "Risk Assessment and Hierarchical Risk Management of Enterprises in Chemical Industrial Parks Based on Catastrophe Theory" International Journal of Environmental Research and Public Health 9, no. 12: 4386-4402.
        https://doi.org/10.3390/ijerph9124386
    
    APA Style
    
                                Chen, Y.,                                 Song, G.,                                 Yang, F.,                                 Zhang, S.,                                 Zhang, Y.,                                 & Liu, Z.        
        
        (2012). Risk Assessment and Hierarchical Risk Management of Enterprises in Chemical Industrial Parks Based on Catastrophe Theory. International Journal of Environmental Research and Public Health, 9(12), 4386-4402.
        https://doi.org/10.3390/ijerph9124386