Xu, Wenxiu, Yanqing Ye, Haiyin Yang, Xuemei Gao, Qiufen Hu, and Yadong Guo. 2014. “A New Cytotoxic Xanthone from Hypericum Chinense”. Asian Journal of Chemistry 26 (19):6367-69. https://doi.org/10.14233/ajchem.2014.16374.