Liang, Z.;                     Zhang, M.;                     Mao, Q.;                     Yu, B.;                     Ma, B.    
        Improvement of Eco-Efficiency in China: A Comparison of Mandatory and Hybrid Environmental Policy Instruments. Int. J. Environ. Res. Public Health 2018, 15, 1473.
    https://doi.org/10.3390/ijerph15071473
    AMA Style
    
                                Liang Z,                                 Zhang M,                                 Mao Q,                                 Yu B,                                 Ma B.        
                Improvement of Eco-Efficiency in China: A Comparison of Mandatory and Hybrid Environmental Policy Instruments. International Journal of Environmental Research and Public Health. 2018; 15(7):1473.
        https://doi.org/10.3390/ijerph15071473
    
    Chicago/Turabian Style
    
                                Liang, Zifeng,                                 Manli Zhang,                                 Qingduo Mao,                                 Bingxin Yu,                                 and Ben Ma.        
                2018. "Improvement of Eco-Efficiency in China: A Comparison of Mandatory and Hybrid Environmental Policy Instruments" International Journal of Environmental Research and Public Health 15, no. 7: 1473.
        https://doi.org/10.3390/ijerph15071473
    
    APA Style
    
                                Liang, Z.,                                 Zhang, M.,                                 Mao, Q.,                                 Yu, B.,                                 & Ma, B.        
        
        (2018). Improvement of Eco-Efficiency in China: A Comparison of Mandatory and Hybrid Environmental Policy Instruments. International Journal of Environmental Research and Public Health, 15(7), 1473.
        https://doi.org/10.3390/ijerph15071473