@book { ChristlichesEngagementinGesellschaftundPolitik,
    title = "Christliches Engagement in Gesellschaft und Politik",
    author = "Lothar {Koch} and Josef G. {Stanzel}",
    year = "2021",
    publisher = "Peter Lang Verlag",
    address = "Berlin, Germany",
    url = "https://www.peterlang.com/document/1072195"
}