Coco, Orazio (24 April 2019). "Italian diplomacy in China: the forgotten affair of Sān Mén Xiàn (1898–1899)". Journal of Modern Italian Studies. 24 (2): 328–349. doi:10.1080/1354571x.2019.1576416. S2CID150961616.
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Coco, Orazio (24 April 2019). "Italian diplomacy in China: the forgotten affair of Sān Mén Xiàn (1898–1899)". Journal of Modern Italian Studies. 24 (2): 328–349. doi:10.1080/1354571x.2019.1576416. S2CID150961616.