@book { EuropischeIntegrationundSozialeArbeit,
    title = "Europäische Integration und Soziale Arbeit",
    author = "Peter {Schäfer}",
    year = "2021",
    publisher = "Peter Lang Verlag",
    address = "Berlin, Germany",
    url = "https://www.peterlang.com/document/1089503"
}