@book { TheClassificationofEthnicGroupsinAncientChina,
    title = "The Classification of Ethnic Groups in Ancient China",
    author = "Wang {Wenguang} and Duan {Hongyun}",
    year = "2023",
    publisher = "Peter Lang Verlag",
    address = "New York, United States of America",
    doi = "10.3726/b20446",
    url = "https://www.peterlang.com/document/1290331"
}