@book { ALettertoChina,
    title = "A Letter to China",
    author = "Alberto {Castelli}",
    year = "2020",
    publisher = "Peter Lang Verlag",
    address = "New York, United States of America",
    doi = "10.3726/b17264",
    url = "https://www.peterlang.com/document/1058778"
}