@book { UmkirchlicheMachtundgeistlicheVollmacht,
    title = "Um kirchliche Macht und geistliche Vollmacht",
    author = "Martin {Onnasch}",
    year = "2021",
    publisher = "Peter Lang Verlag",
    address = "Berlin, Germany",
    url = "https://www.peterlang.com/document/1136150"
}