Iqbal, W.;                     Altalbe, A.;                     Fatima, A.;                     Ali, A.;                     Hou, Y.    
        A DEA Approach for Assessing the Energy, Environmental and Economic Performance of Top 20 Industrial Countries. Processes 2019, 7, 902.
    https://doi.org/10.3390/pr7120902
    AMA Style
    
                                Iqbal W,                                 Altalbe A,                                 Fatima A,                                 Ali A,                                 Hou Y.        
                A DEA Approach for Assessing the Energy, Environmental and Economic Performance of Top 20 Industrial Countries. Processes. 2019; 7(12):902.
        https://doi.org/10.3390/pr7120902
    
    Chicago/Turabian Style
    
                                Iqbal, Wasim,                                 Ali Altalbe,                                 Arooj Fatima,                                 Amjad Ali,                                 and Yumei Hou.        
                2019. "A DEA Approach for Assessing the Energy, Environmental and Economic Performance of Top 20 Industrial Countries" Processes 7, no. 12: 902.
        https://doi.org/10.3390/pr7120902
    
    APA Style
    
                                Iqbal, W.,                                 Altalbe, A.,                                 Fatima, A.,                                 Ali, A.,                                 & Hou, Y.        
        
        (2019). A DEA Approach for Assessing the Energy, Environmental and Economic Performance of Top 20 Industrial Countries. Processes, 7(12), 902.
        https://doi.org/10.3390/pr7120902