Dong, J.;                     Chen, B.;                     Zhang, P.;                     Ai, C.;                     Zhang, F.;                     Guo, D.;                     Qiu, X.    
        Evolution Model of Spatial Interaction Network in Online Social Networking Services. Entropy 2019, 21, 434.
    https://doi.org/10.3390/e21040434
    AMA Style
    
                                Dong J,                                 Chen B,                                 Zhang P,                                 Ai C,                                 Zhang F,                                 Guo D,                                 Qiu X.        
                Evolution Model of Spatial Interaction Network in Online Social Networking Services. Entropy. 2019; 21(4):434.
        https://doi.org/10.3390/e21040434
    
    Chicago/Turabian Style
    
                                Dong, Jian,                                 Bin Chen,                                 Pengfei Zhang,                                 Chuan Ai,                                 Fang Zhang,                                 Danhuai Guo,                                 and Xiaogang Qiu.        
                2019. "Evolution Model of Spatial Interaction Network in Online Social Networking Services" Entropy 21, no. 4: 434.
        https://doi.org/10.3390/e21040434
    
    APA Style
    
                                Dong, J.,                                 Chen, B.,                                 Zhang, P.,                                 Ai, C.,                                 Zhang, F.,                                 Guo, D.,                                 & Qiu, X.        
        
        (2019). Evolution Model of Spatial Interaction Network in Online Social Networking Services. Entropy, 21(4), 434.
        https://doi.org/10.3390/e21040434