@book { PflegerischeVersorgungalterMenschen,
    title = "Pflegerische Versorgung alter Menschen",
    author = "Ingrid {Darmann-Finck} and Heike {Mertesacker}",
    year = "2021",
    publisher = "Peter Lang Verlag",
    address = "Berlin, Germany",
    doi = "10.3726/b18078",
    url = "https://www.peterlang.com/document/1111664"
}