Li, C.;                     Xie, Z.;                     Chen, Z.;                     Cheng, N.;                     Wang, J.;                     Zhu, G.    
        Tunable Bandgap and Optical Properties of Black Phosphorene Nanotubes. Materials 2018, 11, 304.
    https://doi.org/10.3390/ma11020304
    AMA Style
    
                                Li C,                                 Xie Z,                                 Chen Z,                                 Cheng N,                                 Wang J,                                 Zhu G.        
                Tunable Bandgap and Optical Properties of Black Phosphorene Nanotubes. Materials. 2018; 11(2):304.
        https://doi.org/10.3390/ma11020304
    
    Chicago/Turabian Style
    
                                Li, Chunmei,                                 Zhongjing Xie,                                 Zhiqian Chen,                                 Nanpu Cheng,                                 Jinghui Wang,                                 and Guoan Zhu.        
                2018. "Tunable Bandgap and Optical Properties of Black Phosphorene Nanotubes" Materials 11, no. 2: 304.
        https://doi.org/10.3390/ma11020304
    
    APA Style
    
                                Li, C.,                                 Xie, Z.,                                 Chen, Z.,                                 Cheng, N.,                                 Wang, J.,                                 & Zhu, G.        
        
        (2018). Tunable Bandgap and Optical Properties of Black Phosphorene Nanotubes. Materials, 11(2), 304.
        https://doi.org/10.3390/ma11020304