@book { VerwaltungsmodernisierunginderKirche,
    title = "Verwaltungsmodernisierung in der Kirche",
    author = "Steffen {Rupp}",
    year = "2021",
    publisher = "Peter Lang Verlag",
    address = "Berlin, Germany",
    url = "https://www.peterlang.com/document/1097250"
}