@book { Fralle,
    title = "Für alle",
    subtitle = "Der Beitrag der Life and Work-Bewegung zur Begründung christlicher Weltverantwortung",
    author = "Heribert {Niederschlag}",
    year = "1982",
    publisher = "Peter Lang Verlag",
    address = "Berlin, Germany",
    url = "https://www.peterlang.com/document/1071552"
}