@book { WennihrnichtwerdetwiedieKinder,
    title = "'Wenn ihr nicht werdet wie die Kinder'",
    author = "Catharine {Purdie}",
    year = "2021",
    publisher = "Peter Lang Verlag",
    address = "Berlin, Germany",
    url = "https://www.peterlang.com/document/1086929"
}