@book { ChildhoodinEurope,
    title = "Childhood in Europe",
    author = "Manuela {Du Bois-Reymond} and Heinz {Sünker} and Heinz-Hermann {Krüger}",
    year = "2021",
    publisher = "Peter Lang Verlag",
    address = "New York, United States of America",
    url = "https://www.peterlang.com/document/1092700"
}